WP

William R. Poyner

RL Robinson Brothers Limited: 3 patents #2 of 7Top 30%
JH John I. Haas: 1 patents #11 of 24Top 50%
📍 Stourbridge, GB: #9 of 56 inventorsTop 20%
Overall (All Time): #1,287,675 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
5686536 Sulfur-containing amine compositions and agents for vulcanizing rubber Khirud B. Chakraborty, Ranvir Singh Virdi 1997-11-11
5600012 Process for producing tetrahydroisoalpha acids Geoffrey W. Smith, Keith T. Westwood, David Hysert 1997-02-04
5274019 Photodegradable compositions Khirud B. Chakraborty 1993-12-28
4731949 Stabilizing polymers and polymer films Khirud B. Chakraborty 1988-03-22