Arthur Rowland Hoffman

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Longmont, CO, US

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Patents Grantslast 30 patents

Information Patent Grant
High performance ink jet print head for use in a high speed printer
- Patent number 4,841,310
- Issue date Jun 20, 1989
- International Business Machines Corporation
- Arthur R. Hoffman
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Ink jet head
- Patent number 4,245,225
- Issue date Jan 13, 1981
- International Business Machines Corporation
- Gary L. Fillmore
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Charge electrode array for multi-nozzle ink jet array
- Patent number 4,194,211
- Issue date Mar 18, 1980
- International Business Machines Corporation
- Arthur R. Hoffman
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Compensation for aerodynamic drag on ink streams from a multi-nozzl...
- Patent number 4,185,290
- Issue date Jan 22, 1980
- International Business Machines Corporation
- Arthur R. Hoffman
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Method of manufacture of multiple glass nozzle arrays
- Patent number 4,019,886
- Issue date Apr 26, 1977
- International Business Machines Corporation
- Arthur Rowland Hoffman
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS