Inventor

ZEMLAK WARREN M

US3 patents

⚠️ This page may combine multiple inventors who share the name “ZEMLAK WARREN M”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SCHLUMBERGER TECHNOLOGY CORP

2 patents

US6533037B2Mar 18, 2003

Flow-operated valve

SCHLUMBERGER TECHNOLOGY CORP47 citations91

US7779916B2Aug 24, 2010

Apparatus for subsea intervention

SCHLUMBERGER TECHNOLOGY CORP11 citations82

SCLUMBERGER TECHNOLOGY CORP

1 patent

US6446727B1Sep 10, 2002

Process for hydraulically fracturing oil and gas wells

SCLUMBERGER TECHNOLOGY CORP218 citations91