Douglas M. Collins

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Corvallis, OR, US

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Patents Grantslast 30 patents

Information Patent Grant
High print quality inkjet printhead
- Patent number 7,004,556
- Issue date Feb 28, 2006
- Hewlett-Packard Development, L.P.
- Todd A. Cleland
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
High quality fluid ejection device
- Patent number 6,799,822
- Issue date Oct 5, 2004
- Hewlett-Packard Development Company, L.P.
- Todd A. Cleland
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Method of manufacturing an ink jet print head
- Patent number 6,662,435
- Issue date Dec 16, 2003
- Hewlett-Packard Development Company, L.P.
- Robert C. Maze
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
High print quality printhead
- Patent number 6,491,377
- Issue date Dec 10, 2002
- Hewlett-Packard Company
- Todd A. Cleland
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Ink jet print head with flow control manifold shape
- Patent number 6,231,168
- Issue date May 15, 2001
- Hewlett-Packard Company
- Robert C. Maze
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Inkjet print head with flow control manifold and columnar structures
- Patent number 6,132,033
- Issue date Oct 17, 2000
- Hewlett-Packard Company
- Robert N. K. Browning
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS

Patents Applicationslast 30 patents

Information Patent Application
High print quality inkjet printhead
- Publication number 20050104934
- Publication date May 19, 2005
- Todd S. Cleland
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
High quality fluid ejection device
- Publication number 20030117462
- Publication date Jun 26, 2003
- Todd A. Cleland
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS