Inventor

WEIGAND WILLIS A

US3 patents

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

HALLIBURTON CO

2 patents

US4687516AAug 18, 1987

Liquid fluid loss control additive for oil field cements

HALLIBURTON CO145 citations95

US4588032AMay 13, 1986

Fluid spacer composition for use in well cementing

HALLIBURTON CO95 citations94

GRACE W R & CO

1 patent

US5294256AMar 15, 1994

Additives for hydraulic cement compositions

GRACE W R & CO24 citations90