Inventor · disambiguated record
Keith S. Pennington
Also filed as: PENNINGTON KEITH S · PENNINGTON KEITH SAMUEL
29 granted patents·948 citations·filing 1974–1991
97Inventor score
Files withIBM29
Top patents by PatentIndex Score
29 records- 0198US4019188AMicromist jet printerIBM·Filed 1975·Granted Apr 19, 1977·143 cites·3 claims
- 0296US4668995ASystem for reproducing mixed imagesIBM·Filed 1985·Granted May 26, 1987·153 cites·22 claims
- 0395US4046074ANon-impact printing systemIBM·Filed 1976·Granted Sep 6, 1977·59 cites·16 claims
- 0494US4046073AUltrasonic transfer printing with multi-copy, color and low audible noise capabilityIBM·Filed 1976·Granted Sep 6, 1977·66 cites·29 claims
- 0591US4264921AApparatus for color or panchromatic imagingIBM·Filed 1979·Granted Apr 28, 1981·57 cites·22 claims
- 0691US3959798ASelective wetting using a micromist of particlesIBM·Filed 1974·Granted May 25, 1976·49 cites·34 claims
- 0786US4885786AMethod for enlarging an image stored in run representation formIBM·Filed 1988·Granted Dec 5, 1989·80 cites·21 claims
- 0885US5293434ATechnique for use in a transform coder for imparting robustness to compressed image data through use of global block transformationsIBM·Filed 1991·Granted Mar 8, 1994·71 cites·12 claims
- 0984US4617579AHydrophilic protective coatings for electroerosion printingIBM·Filed 1984·Granted Oct 14, 1986·23 cites·24 claims
- 1080US4268368AElectrophoretical method for selectively reinking resistive ribbon thermal transfer printing ribbonsIBM·Filed 1980·Granted May 19, 1981·20 cites·10 claims
- 1180US4253775AApparatus for re-inking a ribbon in a thermal transfer printing systemIBM·Filed 1979·Granted Mar 3, 1981·19 cites·13 claims
- 1278US4011157AUltrasonic removal of solid impurities from recirculating inkIBM·Filed 1976·Granted Mar 8, 1977·31 cites·5 claims
- 1374US4554562AScratch resistant recording materials for electroerosion printing not requiring a lubricant overcoatIBM·Filed 1983·Granted Nov 19, 1985·15 cites·61 claims
- 1469US4894279AElectroerosion print media having protective coatings modified with organotitanium reagentsIBM·Filed 1986·Granted Jan 16, 1990·13 cites·13 claims
- 1567US4567490AElectroerosion recording medium of improved lubricityIBM·Filed 1983·Granted Jan 28, 1986·11 cites·17 claims
- 1665US4915519ADirect negative from resistive ribbonIBM·Filed 1987·Granted Apr 10, 1990·21 cites·18 claims
- 1764US4596733AElectroerosion recording material with polyorganosiloxane overlayerIBM·Filed 1983·Granted Jun 24, 1986·17 cites·20 claims
- 1862US4550061AElectroerosion printing media using depolymerizable polymer coatingsIBM·Filed 1984·Granted Oct 29, 1985·17 cites·20 claims
- 1953US4800397AMetal transfer to form printing master plate or printed circuit boardIBM·Filed 1987·Granted Jan 24, 1989·16 cites·21 claims
- 2048US4678701AResistive printing ribbon having improved propertiesIBM·Filed 1985·Granted Jul 7, 1987·10 cites·15 claims
- 2145US4836105ADirect negative and offset master production using thermal liftoffIBM·Filed 1987·Granted Jun 6, 1989·5 cites·13 claims
- 2245US4830909AScratch resistant recording materials for electroerosion printing comprising cross-linked polymer base layerIBM·Filed 1987·Granted May 16, 1989·9 cites·10 claims
- 2343US5084331AElectroerosion recording medium of improved corrosion resistanceIBM·Filed 1991·Granted Jan 28, 1992·3 cites·13 claims
- 2443US4568977AOn-chip CCD realization of the Laplacian operator for image signal processingIBM·Filed 1983·Granted Feb 4, 1986·6 cites·7 claims
- 2543US4532651AData filter and compression apparatus and methodIBM·Filed 1982·Granted Jul 30, 1985·16 cites·7 claims
- 2640US4836106ADirect offset master by resistive thermal printingIBM·Filed 1987·Granted Jun 6, 1989·6 cites·24 claims
- 2734US4596479ADot matrix printerIBM·Filed 1985·Granted Jun 24, 1986·2 cites·16 claims
- 2832US5176947AElectroerosion printing platesIBM·Filed 1990·Granted Jan 5, 1993·5 cites·11 claims
- 2931US4810119AResistive ribbon for high resolution printingIBM·Filed 1987·Granted Mar 7, 1989·5 cites·22 claims
Join the waitlist — get patent alerts
Get an alert when Keith S. Pennington 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 →