Doogong Yip

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Green Brook, NJ, US

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Patents Grantslast 30 patents

Information Patent Grant
Methods of making multi-color ink stamps
- Patent number 7,387,068
- Issue date Jun 17, 2008
- Trodat GmbH
- Doogong Yip
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Marking structures for hand stamps
- Patent number 7,273,009
- Issue date Sep 25, 2007
- M & R Marking Systems, Inc.
- Doogong Yip
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS

Patents Applicationslast 30 patents

Information Patent Application
Methods of making multi-color ink stamps
- Publication number 20060266239
- Publication date Nov 30, 2006
- M&R Marking Systems, Inc.
- Doogong Yip
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
Marking structures for hand stamps
- Publication number 20040129155
- Publication date Jul 8, 2004
- M&R Marking Systems, Inc.
- Doogong Yip
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS