Yaffa Tomkiewicz

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Katonah, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Selective metal etching in metal/polymer structures
- Patent number 4,684,437
- Issue date Aug 4, 1987
- International Business Machines Corporation
- John J. Donelon
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Class of E-beam resists based on conducting organic charge transfer...
- Patent number 4,338,392
- Issue date Jul 6, 1982
- International Business Machines Corporation
- Edward M. Engler
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Class of E-beam resists based on conducting organic charge transfer...
- Patent number 4,312,935
- Issue date Jan 26, 1982
- International Business Machines Corporation
- Edward M. Engler
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Class of E-beam resists based on conducting organic charge transfer...
- Patent number 4,312,936
- Issue date Jan 26, 1982
- International Business Machines Corporation
- Edward M. Engler
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY