Individual holder
CHAPIN RICHARD D
US·5 granted patents·306 citations·filing 1982–1985
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
5 records- 0191US4473191ADrip irrigation system employing flow regulationCHAPIN RICHARD D·Filed 1982·Granted Sep 25, 1984·81 cites·28 claims
- 0290US4642152ADrip irrigation system employing flow regulationCHAPIN RICHARD D·Filed 1984·Granted Feb 10, 1987·64 cites·20 claims
- 0386US4534515ADrip irrigation system employing adjacently arranged flow-restricting passagesCHAPIN RICHARD D·Filed 1982·Granted Aug 13, 1985·58 cites·45 claims
- 0482US4572756ADrip irrigation system employing adjacently arranged flow-restricting passagesCHAPIN RICHARD D·Filed 1985·Granted Feb 25, 1986·46 cites·20 claims
- 0580US4626130ADrip irrigation systemCHAPIN RICHARD D·Filed 1985·Granted Dec 2, 1986·57 cites·42 claims
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