Inventor

CALLAHAN ROBERT W

US10 patents

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

HOECHST CELANESE CORP

3 patents

US4976897ADec 11, 1990

Composite porous membranes and methods of making the same

HOECHST CELANESE CORP54 citations96

US5102552AApr 7, 1992

Membranes from UV-curable resins

HOECHST CELANESE CORP43 citations92

US4976867ADec 11, 1990

Systems and methods for predetermining maximum pressure differentials for microporous hollow fibers employed in liquid-liquid extractions

HOECHST CELANESE CORP10 citations72

CELGARD INC

3 patents

US6057061AMay 2, 2000

Ethylene-vinyl alcohol copolymer battery separator

CELGARD INC56 citations95

US6602593B1Aug 5, 2003

Battery separators with reduced splitting propensity

CELGARD INC116 citations93

US6287730B1Sep 11, 2001

Hydrophilic polyolefin having a coating containing a surfactant and an EVOH copolymer

CELGARD INC64 citations92

(unassigned)

1 patent

US6849702B2Feb 1, 2005

Polymer matrix material

20 citations91

CELANESE CORP

1 patent

US4966707AOct 30, 1990

Liquid/liquid extractions with microporous membranes

CELANESE CORP48 citations90

EVIONYX INC

1 patent

US7119126B2Oct 10, 2006

Polymer matrix material

EVIONYX INC9 citations72

IBM

1 patent

US4972317ANov 20, 1990

Microprocessor implemented data processing system capable of emulating execution of special instructions not within the established microprocessor instruction set by switching access from a main store portion of a memory

IBM17 citations70