Inventor

Dietrich J. Bahr

Inventor

Herrenberg, DE

Overview

20→

Patents

1977–1985

Patent span

Performing operations

Primary field (CPC B)

Patents· 20 as inventor

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

B41Mprimary

B41MPrinting, duplicating, marking, or copying processes34%

B41JTypewriters24%

C09DCoating compositions, e.g. paints, varnishes or lacquers7%

G01DMeasuring not specially adapted for a specific variable7%

G06KGraphical data reading7%

Y10TTechnical subjects covered by former us classification7%

C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients3%

C08LCompositions of macromolecular compounds3%

H02PControl or regulation of electric motors, electric generators or dynamo-electric converters3%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests3%

PatentTitleYear

4,539,227'Method of making a metallic soap layer as a gliding layer on a metallized record carrier'1985 4,536,769'Method of recording information on an electrosensitive record carrier'1985 4,483,902'Record carrier'1984 4,419,392'Process for producing compact lacquer layers for record carriers'1983 4,396,993'Control circuit for a printing head of a metal paper printer with electrodes arranged on a slope'1983 4,395,715'Method and arrangement for controlling the print current in metal paper printers'1983 4,392,143'Record carrier for electro-erosion printers'1983 4,387,119'Process for generating a sliding layer on the surface of an aluminum-coated record carrier'1983 4,381,322'Process for producing a sliding layer on the surface of an aluminum-coated record carrier'1983 4,376,943'Record carrier for an electro-erosion printer and method for making same'1983 4,369,271'Lacquer for record carriers, and process for its production'1983 4,362,843'Process for producing a polymerized, heat-resistant lacquer'1982 4,359,484'Process for reducing traces of abrasion or scratches on the surface of a record carrier'1982 4,339,477'Process for preparing a pigmented lacquer'1982 4,320,330'Apparatus and method for determining step motor drive pulse timing by rotor displacement'1982 4,186,406'Multiple-electrode print head for electroerosion printers'1980 4,170,779'Print head electrode for metal paper printers'1979 4,163,285'Control circuit for metal paper printer head'1979 4,157,554'Multiple-electrode print head for metal paper printers'1979 4,063,255'Electro erosion printing head'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1985Patents assigned to IBM (20)· patent assignee history

1977–1985Based in Herrenberg, DE· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
IBM	20	1977–1985

Locations

Location	Patents	Span
Herrenberg, DE	20	1977–1985