Assignee
QUARZ ZEIT AG
DE·13 granted patents·75 citations·filing 1977–1980
Top patents by PatentIndex Score
13 records- 0160US4315328ABattery-driven clock with indicator of the end of life of the batteryQUARZ ZEIT AG·Filed 1979·Granted Feb 9, 1982·13 cites·11 claims
- 0260US4254491APulse control for an electric clockQUARZ ZEIT AG·Filed 1978·Granted Mar 3, 1981·12 cites·8 claims
- 0349US4267472ASingle phase stepping motor, particularly for clocksQUARZ ZEIT AG·Filed 1978·Granted May 12, 1981·8 cites·3 claims
- 0447US4201929ASingle phase stepping motorQUARZ ZEIT AG·Filed 1978·Granted May 6, 1980·7 cites·7 claims
- 0547US4138617ASingle phase stepper motorQUARZ ZEIT AG·Filed 1977·Granted Feb 6, 1979·10 cites·11 claims
- 0645US4206375ASingle phase stepping motorQUARZ ZEIT AG·Filed 1978·Granted Jun 3, 1980·7 cites·12 claims
- 0734US4217509ASingle phase stepping motorQUARZ ZEIT AG·Filed 1978·Granted Aug 12, 1980·4 cites·7 claims
- 0834US4206377ASingle phase stepping motorQUARZ ZEIT AG·Filed 1978·Granted Jun 3, 1980·3 cites·15 claims
- 0934US4176515AElectronic clock, particularly a quartz clockQUARZ ZEIT AG·Filed 1977·Granted Dec 4, 1979·2 cites·3 claims
- 1031US4340828ASingle phase stepping motorQUARZ ZEIT AG·Filed 1980·Granted Jul 20, 1982·4 cites·13 claims
- 1131US4206376ASingle phase stepping motorQUARZ ZEIT AG·Filed 1978·Granted Jun 3, 1980·2 cites·13 claims
- 1231US4142147AMethod and system for testing the accuracy of an electronic clockQUARZ ZEIT AG·Filed 1977·Granted Feb 27, 1979·1 cites·11 claims
- 1329US4250576AElectric clockQUARZ ZEIT AG·Filed 1978·Granted Feb 10, 1981·2 cites·9 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →