JH

John G. Hefner

The Dow Chemical: 8 patents #404 of 4,115Top 10%
Air Products And Chemicals: 1 patents #1,147 of 1,997Top 60%
📍 Lake Jackson, TX: #169 of 948 inventorsTop 20%
🗺 Texas: #15,190 of 125,132 inventorsTop 15%
Overall (All Time): #525,484 of 4,157,543Top 15%
10
Patents All Time

Issued Patents All Time

Showing 1–10 of 10 patents

Patent #TitleCo-InventorsDate
6239250 Hot melt adhesives produced from linear alternating polyketones Lloyd M. Robeson 2001-05-29
5565547 Catalyst for the preparation of linear carbon monoxide/alpha-olefin copolymers Brian W. S. Kolthammer 1996-10-15
5554777 Catalyst for the preparation of linear carbon monoxide/alpha-olefin copolymers Brian W. S. Kolthammer 1996-09-10
PP9096 Hybrid tea rose plant named Classic Touch 1995-04-04
5312938 Homogeneous catalysts and olefin polymerization process Brian W. S. Kolthammer 1994-05-17
5196490 Process for preparation of syndiotactic polystyrene Richard E. Campbell, Jr. 1993-03-23
5194532 Homogeneous catalysts and olefin polymerization process Brian W. S. Kolthammer, Dennis R. Gifford 1993-03-16
5045517 Catalyst and process for preparation of syndiotactic polystyrene Richard E. Campbell, Jr. 1991-09-03
4956323 Catalysts prepared from tetrakis(dialkylamide or diarylamide) derivatives of titanium and polymerization of olefins therewith 1990-09-11
4892914 Catalysts prepared from tetrakis(dialkylamide or diarylamide) derivatives of titanium and polymerization of olefins therewith 1990-01-09