Individual holder
DEFREES JOSEPH H
5 granted patents·64 citations·filing 1975–1976
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
5 records- 0159US4126294AAdapter valve mechanism for transportation tankDEFREES JOSEPH H·Filed 1975·Granted Nov 21, 1978·18 cites·11 claims
- 0259US4040456AOpenable bottom loading adapter for transport tankDEFREES JOSEPH H·Filed 1976·Granted Aug 9, 1977·18 cites·10 claims
- 0357US4009862AHydraulically balanced remote controlled emergency valve for storage tankDEFREES JOSEPH H·Filed 1975·Granted Mar 1, 1977·21 cites·13 claims
- 0431US4013096ALoading and unloading valve mechanism for transportation tankDEFREES JOSEPH H·Filed 1975·Granted Mar 22, 1977·4 cites·11 claims
- 0531US4011885AManifold-valve structureDEFREES JOSEPH H·Filed 1975·Granted Mar 15, 1977·3 cites·12 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →