WH

Walter Von Hellens

PG Polytec Gmbh: 2 patents #123 of 432Top 30%
BH Bayer Healthcare: 1 patents #4,623 of 8,007Top 60%
Overall (All Time): #1,645,470 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5693712 Silica filled rubbery vulcanizates Paul Carl Urban 1997-12-02
4721749 Tire tread compounds based on vinyl polybutadiene Joseph Odar 1988-01-26
4645793 EPDM elastomeric compositions Sheikh A. H. Mohammed, Robert A. Hallman 1987-02-24