David Lee Shafer

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Houston, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Polybutene/liquid polydiene hot melt adhesive
- Patent number 6,211,272
- Issue date Apr 3, 2001
- Shell Oil Company
- David Lee Shafer
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Oil gel formulations containing high vinyl content hydrogenated sty...
- Patent number 5,925,707
- Issue date Jul 20, 1999
- Shell Oil Company
- David Lee Shafer
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Sealant formulations containing high vinyl content hydrogenated sty...
- Patent number 5,777,043
- Issue date Jul 7, 1998
- Shell Oil Company
- David Lee Shafer
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
EPDM roofing membrane adhesive system based on hydrogenated styrene...
- Patent number H1735
- Issue date Jun 2, 1998
- Shell Oil Company
- David Romme Hansen
- 524 - Synthetic resins or natural rubbers