David W. Leyshon

AR Atlantic Richfield: 2 patents #2 of 52Top 4%

PP Phillips Petroleum: 1 patents #44 of 108Top 45%

📍 Houston, TX: #40 of 1,005 inventorsTop 4%

🗺 Texas: #265 of 5,943 inventorsTop 5%

Overall (1997): #17,219 of 185,788Top 10%

Patents 1997

Issued Patents 1997

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
RE35632	Methane conversion process	—	1997-10-14
RE35633	Methane conversion process	—	1997-10-14
5591875	Epoxidation Process	Te Chang, Guy L. Crocco	1997-01-07