Assignee
SPHERO INTERNATIONAL CO
5 granted patents·51 citations·filing 1975–1975
Top patents by PatentIndex Score
5 records- 0176US3961497AUniversal jointSPHERO INTERNATIONAL CO·Filed 1975·Granted Jun 8, 1976·20 cites·10 claims
- 0269US3994640ASpherical rotary steam engineSPHERO INTERNATIONAL CO·Filed 1975·Granted Nov 30, 1976·11 cites·37 claims
- 0362US3934559AAnti-pollutant spherical rotary engine with automatic superchargerSPHERO INTERNATIONAL CO·Filed 1975·Granted Jan 27, 1976·9 cites·40 claims
- 0449US4005618ATransmission with continuously variable speed ratioSPHERO INTERNATIONAL CO·Filed 1975·Granted Feb 1, 1977·9 cites·15 claims
- 0531US3967866AAnti-friction pressure sealSPHERO INTERNATIONAL CO·Filed 1975·Granted Jul 6, 1976·2 cites·16 claims
Join the waitlist — get patent alerts
Get an alert when SPHERO INTERNATIONAL CO files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →