JR

John S. Roberts

PP Phillips Petroleum: 2 patents #24 of 130Top 20%
📍 Charlotte, NC: #22 of 221 inventorsTop 10%
🗺 North Carolina: #376 of 3,093 inventorsTop 15%
Overall (2002): #57,725 of 266,432Top 25%
2
Patents 2002

Issued Patents 2002

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
RE37842 Regenerating zeolitic cracking catalyst Brent J. Bertus, Harold W. Mark, Arnold M. Schaffer 2002-09-17
RE37789 Regenerating zeolitic cracking catalyst Brent J. Bertus, Harold W. Mark, Arnold M. Schaffer 2002-07-16