Robert S Farivar

US Patent:

54747970, Dec 12, 1995

Filed:

Feb 10, 1994

Appl. No.:

8/195822

Inventors:

Piran Sioshansi - Lincoln MA
Eric J. Tobin - Burlington MA
John E. Barry - Everett MA
Robert S. Farivar - Chestnut Hill MA

Assignee:

Spire Corporation - Bedford MA

International Classification:

B05D 104
A61L 214
A61L 220
A61L 2700

US Classification:

427 224

Abstract:

Polymeric implants provided with coatings of bactericidal compounds in the form of ionized atoms by a vapor process. The polymeric implants include products designed to penetrate or enter the body, such as catheters, shunts connectors and the like. Coatings of bactericidal compounds on the polymeric implants are intended to make their use safe. The coatings are formed thereon in the form of ionized atoms of the compounds by ion-beam-assisted deposition in a vacuum chamber. The vacuum chamber is provided, inter alia, with an evaporator and an ion source mounted in operative association therein, including means for rotatably mounting a plurality of polymeric implants for exposure to the evaporator and the ion source.

US Patent:

52233090, Jun 29, 1993

Filed:

Jul 8, 1992

Appl. No.:

7/910777

Inventors:

Robert S. Farivar - Cambridge MA
Piran Sioshansi - Lincoln MA

Assignee:

Spire Corporation - Bedford MA

International Classification:

B05D 306

US Classification:

427525

Abstract:

A process to improve the surface properties of products made, at least in part, from silicone rubber is disclosed. The products find uses in industrial and medical device applications, such as drug-pump seals and valves, membranes, mammary prostheses, artificial heart diaphragms, pacemaker lead insulation and the like. The process is designed to change the silicone rubber's surface to one that is characterized by low friction, being antithrombotic, inkable, more wear resistant and deformable, and also being hydro-compatible. The process includes subjecting the product's silicone rubber surface to ion bombardment with gaseous ions that diffuse out with doses and at energy levels at least about 3E14 ions/cm. sup. 2 at 80 keV.

US Patent:

20200170813, Jun 4, 2020

Filed:

Feb 11, 2020

Appl. No.:

16/787291

Inventors:

- Iowa City IA, US
Robert S. Farivar - Minneapolis MN, US
Madhavan L. Raghavan - Coralville IA, US
Vijay Kumar - Iowa City IA, US

Assignee:

The University of Iowa Research Foundation - Iowa City IA

International Classification:

A61F 2/86
C22F 1/10
C21D 1/18
B29C 39/10
B29C 39/02
A61F 2/95
A61L 27/50
A61L 27/20
A61F 2/24

Abstract:

Vascular prosthetic assemblies (e.g., heart valves), such as those, for example, configured to be deployed percutaneously.