Inventor

Keith S. Pennington

Inventor

Somers, NY, US

Overview

30→

Patents

1976–1994

Patent span

Performing operations

Primary field (CPC B)

Patents· 30 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

B41Mprimary

B41MPrinting, duplicating, marking, or copying processes24%

Y10TTechnical subjects covered by former us classification17%

B41JTypewriters14%

H04NPictorial communication, e.g. television8%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests8%

B41CProcesses for the manufacture or reproduction of printing surfaces6%

H05KPrinted circuits4%

B41NPrinting plates or foils3%

G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices3%

G06TImage data processing or generation, in general3%

PatentTitleYear

5,293,434'Technique for use in a transform coder for imparting robustness to compressed image data through use of global block transformations'1994 5,176,947'Electroerosion printing plates'1993 5,084,331'Electroerosion recording medium of improved corrosion resistance'1992 4,915,519'Direct negative from resistive ribbon'1990 4,894,279'Electroerosion print media having protective coatings modified with organotitanium reagents'1990 4,885,786'Method for enlarging an image stored in run representation form'1989 4,836,105'Direct negative and offset master production using thermal liftoff'1989 4,836,106'Direct offset master by resistive thermal printing'1989 4,830,909'Scratch resistant recording materials for electroerosion printing comprising cross-linked polymer base layer'1989 4,810,119'Resistive ribbon for high resolution printing'1989 4,800,397'Metal transfer to form printing master plate or printed circuit board'1989 4,678,701'Resistive printing ribbon having improved properties'1987 4,668,995'System for reproducing mixed images'1987 4,617,579'Hydrophilic protective coatings for electroerosion printing'1986 4,596,733'Electroerosion recording material with polyorganosiloxane overlayer'1986 4,596,479'Dot matrix printer'1986 4,568,977'On-chip CCD realization of the Laplacian operator for image signal processing'1986 4,567,490'Electroerosion recording medium of improved lubricity'1986 4,554,562'Scratch resistant recording materials for electroerosion printing not requiring a lubricant overcoat'1985 4,550,061'Electroerosion printing media using depolymerizable polymer coatings'1985 4,532,651'Data filter and compression apparatus and method'1985 T0105002'Erosion process for generation of offset masters'1985 4,268,368'Electrophoretical method for selectively reinking resistive ribbon thermal transfer printing ribbons'1981 4,264,921'Apparatus for color or panchromatic imaging'1981 4,253,775'Apparatus for re-inking a ribbon in a thermal transfer printing system'1981 4,046,073'Ultrasonic transfer printing with multi-copy, color and low audible noise capability'1977 4,046,074'Non-impact printing system'1977 4,019,188'Micromist jet printer'1977 4,011,157'Ultrasonic removal of solid impurities from recirculating ink'1977 3,959,798'Selective wetting using a micromist of particles'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1994Patents assigned to IBM (29)· patent assignee history

1976–1994Based in Somers, NY, US· patent location history

1989Based in Somer, NY, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
IBM	29	1976–1994

Locations

Location	Patents	Span
Somers, New York, US	29	1976–1994
Somer, New York, US	1	1989