David Garry Rowan

US Patent:

59000945, May 4, 1999

Filed:

Aug 1, 1997

Appl. No.:

8/918732

Inventors:

Andree F. Santini - Easton PA
Richard E. Miller - Palm Coast FL
David Rowan - Bethlehem PA
Chris Leidy - Easton PA
Paul Fox - Newton MA

Assignee:

Binney & Smith Inc. - Easton PA

International Classification:

B44C 1165
B32B 3100

US Classification:

156230

Abstract:

A washable dry erase coloring composition comprising an acid dye or polymeric dye colorant, a dye vehicle, a release agent, and a dyeblocker additive. The dyeblocker additive is either a sulfonated naphthalene condensation product or a sulfonated phenol-formaldehyde condensation product. The dry erase coloring composition is suitable for use in marking on a whiteboard and enhances fugitivity from skin and fabrics. The dry erase coloring composition may optionally contain a film forming resin. More specifically, the invention is, in one preferred embodiment, a washable erasable whiteboard marker ink comprising an acid dye or polymeric dye, water, a film forming resin, a release agent and a sulfonated phenol-formaldehyde condensation product. In addition, the invention also includes a method of transferring an image from a whiteboard or non-porous surface to paper. This method comprises the steps of: (a) drawing an image on a whiteboard or non-porous surface with a washable coloring composition containing a dyeblocker; (b) applying a moistened paper to the image; (c) rubbing the moistened paper to transfer the image from the whiteboard to the paper; and (d) removing the paper.

US Patent:

39444198, Mar 16, 1976

Filed:

Jan 30, 1975

Appl. No.:

5/545682

Inventors:

Alfred I. Bigatel - Allentown PA
Quentin T. Jarrett - Wescosville PA
Ronald A. Petskus - Bethlehem PA
David C. Rowan - Allentown PA
Joseph M. Scheetz - Whitehall PA

Assignee:

Western Electric Co., Inc. - New York NY

International Classification:

G03C 504

US Classification:

96 27R

Abstract:

To avoid damaging photolithographic masks and photoresist coatings on articles during selective exposure of the photoresist coatings, the mask is held very near to, but not in contact with, the photoresist coating during the selective exposure. Because of the close spacing involved, such a technique is commonly termed "proximity printing. " To provide suitable spacers for holding a mask in uniform proximity with a photoresist coating, a plurality of droplets of a liquid acrylic resin are dispensed onto the mask and cured in air to harden them. For proximity printing, the mask is simply pressed against the photoresist coating with the droplets therebetween and light of sufficient wavelength and intensity is directed selectively onto the coating through the mask for a sufficient time.

US Patent:

20190016877, Jan 17, 2019

Filed:

May 2, 2018

Appl. No.:

15/969253

Inventors:

- Easton PA, US
David E. Rowan - Bethlehem PA, US
Michael L. Spera - Mohnton PA, US

Assignee:

Crayola LLC - Easton PA

International Classification:

C08L 29/04
C08L 3/02
C08K 3/38
C08K 3/26
C08K 3/22
C08K 5/053

Abstract:

The present invention provides moldable compositions that are capable of resisting slumping and cracking when allowed to dry and harden. Embodiments of the moldable composition comprise water, fillers including arrowroot and kaolin clay, at least one polar polymeric resin (e.g., polyvinyl alcohol), at least one thickening agent (e.g., ammonium pentaborate tetrahydrate), one or more pH adjusters (e.g., triethanolamine, sodium bicarbonate), a humectant (e.g., propylene glycol, glycerin), optionally at least one releasing agent (e.g., mineral oil), and optionally at least one additive.