FR

Frederick J. Ravagnani

Bridgestone: 5 patents #476 of 2,860Top 20%
TR The Firestone Tire & Rubber: 5 patents #29 of 233Top 15%
BT Bridgestone Firestone North American Tire: 2 patents #47 of 133Top 40%
Overall (All Time): #425,491 of 4,157,543Top 15%
12
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
7393564 Rubber compositions and articles thereof having improved metal adhesion Steven E. Schonfeld, William L. Hergenrother 2008-07-01
7201944 Rubber compositions and articles thereof having improved metal adhesion and metal adhesion retention with bright steel Steven E. Schonfeld, William L. Hergenrother 2007-04-10
5962593 Poly (metal carboxylate) grafted rubbers with high modulus William L. Hergenrother, John M. Doshak 1999-10-05
5494091 High modulus low hysteresis rubber compound for pneumatic tires Roy M. Freeman, William L. Hergenrother 1996-02-27
5494958 High modulus low hysteresis rubber compound for pneumatic tires Roy M. Freeman, William L. Hergenrother 1996-02-27
5484005 Pneumatic tire with air retention carcass Christine L. Morehart 1996-01-16
5464899 High modulus low hysteresis rubber compound for pneumatic tires Roy M. Freeman, William L. Hergenrother 1995-11-07
4745145 Rubber compositions and articles thereof having improved metal adhesion and metal adhesion retention Steven E. Schonfeld, Adel Farhan Halasa 1988-05-17
4324281 Method, composition and product employing a tetracarboxylic dianhydride to improve adhesion between a metal member and a contiguous rubber skim stock Steven E. Schonfeld 1982-04-13
4239663 Method, composition and product with improved adhesion between a metal member and a contiguous rubber skim stock Steven E. Schonfeld 1980-12-16
4203874 Method, composition and product with improved adhesion between a metal member and a contiguous cured rubber skim stock Adel Farhan Halasa, Steven E. Schonfeld 1980-05-20
4195679 Composition and product with improved adhesion between a metal member and a contiguous cured rubber skim stock Steven E. Schonfeld 1980-04-01