Inventor · disambiguated record
Robert W. Callahan
Also filed as: CALLAHAN ROBERT W · CALLAHAN ROBERT WILLIAM
12 granted patents·1 pending application·456 citations·filing 1976–2004
93Inventor score
Top patents by PatentIndex Score
13 records- 0189US6287730B1Hydrophilic polyolefin having a coating containing a surfactant and an EVOH copolymerCELGARD INC·Filed 1998·Granted Sep 11, 2001·64 cites·12 claims
- 0288US6602593B1Battery separators with reduced splitting propensityCELGARD INC·Filed 1999·Granted Aug 5, 2003·116 cites·20 claims
- 0386US4976897AComposite porous membranes and methods of making the sameHOECHST CELANESE CORP·Filed 1987·Granted Dec 11, 1990·54 cites·12 claims
- 0480US4966707ALiquid/liquid extractions with microporous membranesCELANESE CORP·Filed 1986·Granted Oct 30, 1990·48 cites·13 claims
- 0577US6057061AEthylene-vinyl alcohol copolymer battery separatorCELGARD INC·Filed 1997·Granted May 2, 2000·56 cites·4 claims
- 0677US5102552AMembranes from UV-curable resinsHOECHST CELANESE CORP·Filed 1990·Granted Apr 7, 1992·43 cites·21 claims
- 0776US6849702B2Polymer matrix materialFiled 2001·Granted Feb 1, 2005·20 cites·70 claims
- 0863US7119126B2Polymer matrix materialEVIONYX INC·Filed 2004·Granted Oct 10, 2006·9 cites·9 claims
- 0948US4972317AMicroprocessor 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 memoryIBM·Filed 1989·Granted Nov 20, 1990·17 cites·8 claims
- 1042US4976867ASystems and methods for predetermining maximum pressure differentials for microporous hollow fibers employed in liquid-liquid extractionsHOECHST CELANESE CORP·Filed 1989·Granted Dec 11, 1990·10 cites·17 claims
- 1140US4056846AData processing system with apparatus for sharing channel background processingIBM·Filed 1976·Granted Nov 1, 1977·12 cites·4 claims
- 1238US2002012848A1Electrochemical cell incorporating polymer matrix materialFiled 2001·Application pending·0 cites
- 1334US4048671AAddress match for data processing system with virtual addressingIBM·Filed 1976·Granted Sep 13, 1977·7 cites·6 claims
Join the waitlist — get patent alerts
Get an alert when Robert W. Callahan files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →