Robert B Dougherty

US Patent:

6638284, Oct 28, 2003

Filed:

Nov 28, 2000

Appl. No.:

09/723854

Inventors:

Robert A. Rousseau - Ottsville PA
Robert Dougherty - Reading PA

Assignee:

Ethicon, Inc. - Somerville NJ

International Classification:

A61F 200

US Classification:

606151, 606213, 66193, 66195

Abstract:

A knitted surgical mesh formed from a yarn. The knitted mesh has from about 40 to about 80 courses per inch and from about 7 to 11 wales per inch, and a pore size percentage greater than 50%.

US Patent:

20080058456, Mar 6, 2008

Filed:

Aug 21, 2007

Appl. No.:

11/894436

Inventors:

Ari K. Kar - Warrington PA, US
Robert F. Dougherty - Hatboro PA, US

International Classification:

C08J 3/00

US Classification:

524457

Abstract:

The present invention provides aqueous amphiphilic emulsion copolymer compositions comprising one or more aqueous phase copolymer, a residue of one or more hydrophilic chain transfer agent, and a residue of one or more hydrophobic chain transfer agent, as well as methods of making such copolymers in water or an aqueous liquid by copolymerizing a monomer component of from 20 to 80 wt. %, based on the weight of the monomer component, of a hydrophilic group-containing monomer and the remainder of a copolymerizable ethylenically unsaturated monomer or prepolymer in the presence of a mixed chain transfer agent component comprising a hydrophilic chain transfer agent, such as 3-mercaptopropionic acid, and a hydrophobic chain transfer agent, such as N-dodecyl mercaptan. The aqueous amphiphilic emulsion copolymers of the present invention are storage stable and exhibit excellent viscosity control even in high solids compositions, e.g. from 50 to 80 wt. % of the composition. The high solids compositions can be diluted at the point of use, thus reducing shipment costs.

US Patent:

62873164, Sep 11, 2001

Filed:

Mar 26, 1999

Appl. No.:

9/277671

Inventors:

Vishvaroop Agarwal - Philadelphia PA
Robert Dougherty - Reading PA

Assignee:

Ethicon, Inc. - Somerville NJ

International Classification:

A61B 1708

US Classification:

606151

Abstract:

A knitted surgical mesh formed from a yarn. The knitted mesh has from 18 to 24 courses per inch and from 5 12 to 16 wales per inch, a flexibility of from 400-950 mg-cm/cm, a burst strength greater than 175 pounds per square inch, and a pore size percentage greater than 37%.

US Patent:

60901160, Jul 18, 2000

Filed:

Apr 2, 1999

Appl. No.:

9/269980

Inventors:

Margaret M. D'Aversa - Whitehouse Station NJ
Robert Dougherty - Reading PA

International Classification:

A61B 1704

US Classification:

606151

Abstract:

A knitted surgical mesh formed from a yarn. The knitted mesh has from 11 to 13 courses per inch and from 8 to 10 wales per inch, a flexibility of from 10 to 16 gfcm/cm, a burst strength greater than 175 pounds per square inch, and a pore size percentage greater than 37%.