Geoffrey D Hietpas from 313 Amoroso Way, Newark, DE 19711, age 56, Phone: 3028949478

Resumes

Global Apparel Technology Director

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Location:

Newark, DE

Industry:

Apparel & Fashion

Work:

Lycra Brand
Global Apparel Technology Director
Invista 2004 - Jan 2019
Global Apparel Technology Director
Dupont 1997 - 2004
Principal Investigator
Sc Johnson Wax 1991 - 1992
Polymers Internship

Education:

Penn State University 1992 - 1997
Doctorates, Doctor of Philosophy, Chemistry University of Wisconsin - Madison 1988 - 1991
Bachelors, Bachelor of Science, Chemistry

Skills:

Product Development
Management
Competitive Analysis
Cross Functional Team Leadership
Apparel
Manufacturing
Polymers
Marketing Strategy
Strategic Planning
Coatings
Project Management
New Business Development
Leadership
R&D
Business Strategy
Commercialization

Us Patents

Stretch Slipcovers
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US Patent:

6736453, May 18, 2004
Filed:

Dec 5, 2001
Appl. No.:

10/007578
Inventors:

Jeffrey A. Chambers - Hockessin DE
John Gorcyca - Kennett Square PA
Geoffrey D. Hietpas - Newark DE
Assignee:

E. I. du Pont de Nemours and Co. - Wilmington DE
International Classification:

A47C 3100
US Classification:

2972281, 442182
Abstract:

Upholstery stretch slipcovers are constructed from fabric having sufficient elastic recovery force so that the covers require no additional fabric to hold the slipcovers in place or to maintain a substantial absence of wrinkles in the slipcovers. The stretch slipcovers are particularly useful for chairs having separate back and seat cushions.

Process For Making Poly(Trimethylene Terephthalate) Staple Fibers
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US Patent:

6752945, Jun 22, 2004
Filed:

Aug 22, 2001
Appl. No.:

09/934904
Inventors:

Ismael A. Hernandez - Clemmons NC
Geoffrey David Hietpas - Newark DE
James M. Howell - Greenville NC
Claudia Schultze - Greenville DE
Assignee:

E. I. du Pont de Nemours and Company - Wilmington DE
International Classification:

D01D 5088
US Classification:

264143, 264168, 2642107, 2642108, 26421114, 26421117, 264235, 2642356, 264342 RE
Abstract:

A process of making polytrimethylene terephthalate staple fibers, including (a) providing polytrimethylene terephthalate, (b) melt spinning the melted polytrimethylene terephthalate at a temperature of 245-285Â C. into filaments, (c) quenching the filaments, (d) drawing the quenched filaments, (e) crimping the drawn filaments using a mechanical crimper at a crimp level of 8-30 crimps per inch (3-12 crimps/cm), (f) relaxing the crimped filaments at a temperature of 50-120Â C. , and (g) cutting the relaxed filaments into staple fibers having a length of about 0. 2-6 inches (about 0. 5-about 15 cm), and polytrimethylene terephthalate staple fibers, yarns and fabrics. Further, a process of optimizing the crimp take-up of a polytrimethylene terephthalate staple fiber including determining the relationship between denier and crimp take-up and manufacturing staple fibers having a denier selected based upon that determination.

Process For Preparing Poly(Trimethylene Terephthalate) Tetrachannel Cross-Section Staple Fiber
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US Patent:

6835339, Dec 28, 2004
Filed:

Jun 24, 2002
Appl. No.:

10/178753
Inventors:

Ismael A. Hernandez - Florence SC
Geoffrey David Hietpas - Newark DE
James M. Howell - Greenville NC
Claudia Schultze - Greenville DE
Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE
International Classification:

D01D 522
US Classification:

264103, 264143, 264168, 26417713, 2642108, 26421114, 26421117, 264235, 2642356, 264342 RE
Abstract:

Poly(trimethylene terephthalate) tetrachannel cross-section staple fibers, as well as yarns, fiberfill webs, batts and products, and fabrics made therewith. Also, the process of making such staple fibers, yarns, fiberfill webs, batts and products, and fabrics.

Process Of Making Web Or Fiberfill From Polytrimethylene Terephthalate Staple Fibers
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US Patent:

6872352, Mar 29, 2005
Filed:

Aug 22, 2001
Appl. No.:

09/934905
Inventors:

Ismael A. Hernandez - Clemmons NC, US
Geoffrey David Hietpas - Newark DE, US
James M. Howell - Greenville NC, US
Assignee:

E. I. du Pont de Nemours and Company - Wilmington DE
International Classification:

D01D005/22
D01D005/26
D01F006/62
D02G001/12
D04H003/16
US Classification:

264442, 19 98, 191457, 28100, 28263, 156 624, 156 732, 264103, 264143, 264168, 2641711, 2642102, 2642107, 2642108, 26421114, 264342 RE
Abstract:

The invention relates to webs or batts including polytrimethylene terephthalate crimped staple fibers and fiberfill products comprising such webs and batts, as well as the processes of making the staple fibers, webs, batts and fiberfill products. According to the preferred process of making a web or batt, polytrimethylene terephthalate staple fibers, containing polytrimethylene terephthalate is melt spun at a temperature of 245-285 C. into filaments. The filaments are quenched, drawn and mechanically crimped to a crimp level of 8-30 crimps per inch (3-12 crimps/cm). The crimped filaments are relaxed at a temperature of 50-130 C. and then cut into staple fibers having a length of about 0. 2-6 inches (about 0. 5-about 15 cm).

Process And Apparatus For Improved Conditioning Of Melt-Spun Material
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US Patent:

6881047, Apr 19, 2005
Filed:

May 15, 2001
Appl. No.:

09/855343
Inventors:

Steven Wayne Smith - Waynesboro VA, US
Geoffrey David Hietpas - Newark DE, US
Richard Terry Wood - Charleston SC, US
Assignee:

Invista North America S.a.r.l. - Wilmington DE
International Classification:

D01D005/096
D01D005/092
US Classification:

425 722, 425 94, 425104, 425DIG 115
Abstract:

An apparatus and process for applying finish to an expanded filament array in a quench system with air directed inward to the filament bundle. The applicator may be used inside or proximate quench zones in a radial, pneumatic, or cross-flow quench system. The apparatus includes a spinneret, a quench zone located below said spinneret, wherein cooling gas is directed inward to an expanded filament array inside said quench zone, and an applicator inside or below said quench zone, wherein the applicator contacts the filament and delivers the finish to the expanded filament array.

Method For Preparing High Bulk Composite Sheets
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US Patent:

6984276, Jan 10, 2006
Filed:

Dec 16, 2002
Appl. No.:

10/320142
Inventors:

Dimitri P. Zafiroglu - Wilmington DE, US
Geoffrey David Hietpas - Newark DE, US
Assignee:

Invista North America S.arl. - Wilmington DE
International Classification:

D04H 1/50
D04H 1/60
D04H 5/00
US Classification:

156 84, 156148, 156181, 156283, 1563802, 264109, 264122, 264128, 264168, 26417214, 26417215, 264175
Abstract:

This invention relates to a method for preparing nonwoven fabrics having an improved balance of properties in the machine and cross-directions. More specifically, the invention utilizes nonwoven webs that include relatively low levels of multiple-component fibers having latent three-dimensional spiral crimp combined with fibers that do not develop spiral crimp. The latent spiral crimp of the multiple-component fibers is activated, such as by heating, under free shrinkage conditions, after formation of the nonwoven web to achieve re-orientation of the non-spirally-crimpable fibers and an improved balance of properties such as tensile strength and modulus.

Stretchable Composite Sheets And Processes For Making
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US Patent:

7005395, Feb 28, 2006
Filed:

Dec 12, 2002
Appl. No.:

10/317416
Inventors:

Dimitri P. Zafiroglu - Wilmington DE, US
Geoffrey David Hietpas - Newark DE, US
Debora Flanagan Massouda - Wilmington DE, US
Thomas Michael Ford - Greenville DE, US
Assignee:

Invista North America S.a.r.l. - Wilmington DE
International Classification:

D04H 1/006
B32B 5/026
B32B 3/006
US Classification:

442352, 442401, 442360, 442362, 442381, 442382, 428103, 156 85
Abstract:

This invention relates to an improved method for preparing stretchable multiple-component bonded composite sheets which involves bonding a fibrous layer of spirally-crimpable multiple-component continuous filaments or staple fibers to one or more non-spirally-crimpable layers using an array of intermittent mechanical, chemical, or thermal bonds, and heating the bonded composite to activate the spiral crimp of the fibers in the spirally-crimpable layer. Multi-layer nonwoven fabrics prepared according to the method of the current invention have an improved combination of strength, aesthetics, stretch-recovery properties, and textile hand and drape compared to multiple-component nonwoven fabrics known in the art.

Stretchable Multiple-Component Nonwoven Fabrics And Methods For Preparing
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US Patent:

7036197, May 2, 2006
Filed:

Dec 13, 2002
Appl. No.:

10/318466
Inventors:

Dimitri P. Zafiroglu - Wilmington DE, US
Geoffrey David Hietpas - Newark DE, US
Debora Flanagan Massouda - Wilmington DE, US
Thomas Michael Ford - Greenville DE, US
Assignee:

Invista North America S.A.R.L. - Wilmington DE
International Classification:

D03D 15/04
D01D 5/22
D04H 13/00
D02G 3/00
US Classification:

28156, 264168, 264155, 442352, 442361, 428369, 428371, 428373
Abstract:

A method for preparing stretchable bonded nonwoven fabrics which involves forming a substantially nonbonded nonwoven web of multiple-component continuous filaments or staple fibers which are capable of developing three-dimensional spiral crimp, activating the spiral crimp by heating substantially nonbonded web under free shrinkage conditions during which the nonwoven remains substantially nonbonded, followed by bonding the crimped nonwoven web using an array of discrete mechanical, chemical, or thermal bonds. Nonwoven fabrics prepared according to the method of the current invention have an improved combination of stretch-recovery properties, textile hand and drape compared to multiple-component nonwoven fabrics known in the art.