Robert J Pieroni

US Patent:

6431350, Aug 13, 2002

Filed:

Feb 22, 2001

Appl. No.:

09/791043

Inventors:

Robert J. Pieroni - Rehoboth Beach DE
Paul R. Pierson - Camden DE
Alain Damai - Northvale NJ

Assignee:

Dentsply Research Development Corp.

International Classification:

A61B 1902

US Classification:

206 635, 211 74

Abstract:

The invention provides a storage stable dental composition having a volatile organic solvent and a polymerizable material enclosed by a package, which includes a cover and a container made of a polymer such as a copolymer of a cycloolefin and an open chain olefin. In accordance with an embodiment of the invention is provided a stored packaged dental product by the process including: enclosing a dental composition in a package with at least a substantial portion of an injection molded polymer such as a thermoplastic copolymer of a cycloolefin and an open chain olefin, and storing the dental composition in the package for a least 1 week.

US Patent:

8016161, Sep 13, 2011

Filed:

Jun 12, 2006

Appl. No.:

11/451108

Inventors:

Paul Richard Pierson - Camden DE, US
Curt E. Metzbower - Washington Crossing PA, US
Robert J. Pieroni - Milford DE, US

Assignee:

Dentsply International, Inc. - York PA

International Classification:

B67D 7/70

US Classification:

222137, 2221456, 2225416, 2225419

Abstract:

A package () for the storage and dispensing of a plurality of materials includes a first and a second longitudinally juxtaposed barrels (). Each barrel () having a first and a second end (). Each first and second barrels () having a quantity of at least one of the materials initially contained therein, and each barrel having an open end () and a dispensing end (). A sealing plunger () disposed in each barrel () such that the material in each barrel () is initially positioned between the dispensing end () of the barrels () and the respective ones of the sealing plungers (). A snap cap () is contiguously formed to initially close each of the dispensing ends () of the barrels (), such that the snap cap () may be broken from the barrels () to thereby forming a secondary open end () at the dispensing end () of the barrels (), thereby facilitating the material contained in each barrel () to flow through and be dispensed.

US Patent:

8147122, Apr 3, 2012

Filed:

Mar 4, 2004

Appl. No.:

10/793579

Inventors:

Robert J. Pieroni - Lewes DE, US

Assignee:

DENTSPLY International Inc. - York PA

International Classification:

B01F 7/00

US Classification:

3661711, 3661721, 366307, 36632592, 3663291, 2221456

Abstract:

A tip () for mixing a plurality of components and for dispensing the mixture. The tip is particularly suited for use with a bulk supply of the components (). The tip is further particularly suited for the mixing and dispensing of reactive materials. The tip () includes a housing () having a stator () positioned therein. The housing () includes a plurality of feeder channels () that correspond to outlet channels of the bulk storage device. At least one of the feeder channels () has a length dimension such that it extends into the outlet channel of the bulk storage device to prevent cross-contamination of the components held within the bulk storage device.

US Patent:

8602260, Dec 10, 2013

Filed:

Apr 19, 2012

Appl. No.:

13/450534

Inventors:

Paul Richard Pierson - Camden DE, US
Tony Bonanno - Felton DE, US
Robert Pieroni - Milford DE, US

Assignee:

Dentsply International Inc. - York PA

International Classification:

B65D 35/22

US Classification:

222 94, 222102

Abstract:

Disclosed herein is a device suitable for the delivery of dental materials, such as impression material. The device disclosed herein includes a cartridge that has at least two separate pouches and a spout.

US Patent:

20080015539, Jan 17, 2008

Filed:

Feb 28, 2006

Appl. No.:

11/364780

Inventors:

Robert Pieroni - Lewes DE, US
Curt Metzbower - Washington Crossing PA, US

International Classification:

A61J 3/00
A61B 19/00

US Classification:

604403000

Abstract:

An adapter assembly for connecting a medication bottle to a needleless syringe, particularly a luer-lock syringe, is provided. The bottle adapter includes a cylindrically-shaped main body. Multiple annular fins project outwardly from the main body for engaging and gripping the interior surfaces of the bottle. This close interference fitting between the adapter and bottle provides a tight and effective seal. The adapter is particularly suitable for connecting a bottle containing a drug in solid form, such as a powdered drug, to a syringe containing a liquid carrier. The syringe is inserted into the adapter and liquid is injected into the bottle. The liquid mixes with the powdered drug to form a drug solution. The bottle adapter can be used in a wide variety of medical, dental, pharmaceutical, and other healthcare applications.

US Patent:

20110076641, Mar 31, 2011

Filed:

Sep 30, 2010

Appl. No.:

12/894576

Inventors:

XIN HUO - Dover DE, US
Robert Pieroni - Milford DE, US

International Classification:

A61C 3/06
B24D 11/00

US Classification:

433142, 51295

Abstract:

A two-unit system for finishing and polishing a target surface such as a dental restoration or appliance. A two-unit system and the method of employing such a system may include a finishing unit that combines gross reduction and final contouring capabilities into the single finishing unit that still results in leaving a smooth surface finish. A separate polishing unit may also be provided that combines contacting the target surface to polish and to achieve high gloss luster into the single unit.

US Patent:

20120017412, Jan 26, 2012

Filed:

Oct 6, 2010

Appl. No.:

12/898909

Inventors:

PAUL RICHARD PIERSON - Camden DE, US
Curt E. Metzbower - Washington Crossing PA, US
Robert J. Pieroni - Lewes DE, US

International Classification:

B23P 11/00

US Classification:

29428

Abstract:

A package () for the storage and dispensing of a plurality of material includes a first and a second longitudinally juxtaposed barrels (). Each barrel () having a first and a second end (). Each first and second barrels () having a quantity of at least one of the material initially contained therein, and each barrel having an open end () and a dispensing end (). A piston () is disposed in each barrel () such that the material in each barrel () is initially positioned between the dispensing end () of the barrels () and the respective ones of the pistons (). A snap cap () is contiguously formed to initially close each of the dispensing ends () of the barrels (), such that the snap cap () may be broken from the barrels () to thereby forming a secondary open end () at the dispensing end () of the barrels (), thereby facilitating the material contained in each barrel () to flow through and be dispensed.

US Patent:

20120164594, Jun 28, 2012

Filed:

Jan 25, 2010

Appl. No.:

12/657647

Inventors:

Robert J. Pieroni - Milford DE, US
Andrew J. Coste - Swarthmore PA, US

International Classification:

A61C 5/12
A61C 5/04

US Classification:

433 39

Abstract:

A dental separator device for applying pressure against adjacent teeth to separate the teeth from one another so that a dental restoration can be made. The separator device increases the interproximal space between the adjacent teeth giving the dental clinician improved visibility and working space. The invention also encompasses a flexible matrix band used for making the restoration. The matrix band is wrapped around the tooth to define a desired mold or shape for the restoration.