Assignee
PETREL
FR·4 granted patents·168 citations·filing 1987–1990
Top patents by PatentIndex Score
4 records- 0192US5118349ASecurity markings, material provided with security marks, and apparatus to detect the security markPETREL·Filed 1990·Granted Jun 2, 1992·73 cites·5 claims
- 0281US4833311ASecurity markings, material provided with security marks, and apparatus to detect the security markPETREL·Filed 1987·Granted May 23, 1989·55 cites·3 claims
- 0373US4891505ASecurity markings, material provided with security marks, and apparatus to detect the security markPETREL·Filed 1989·Granted Jan 2, 1990·24 cites·4 claims
- 0451US4921534ASecurity markings, material provided with security marks, and apparatus to detect the security markPETREL·Filed 1989·Granted May 1, 1990·16 cites·6 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →