Assignee
DORMA DOOR CONTROLS INC
US·11 granted patents·1 pending application·513 citations·filing 1978–2009
Top patents by PatentIndex Score
12 records- 0197US5913763AMethod for controlling the operational modes of a door in conjunction with a mechanical door control mechanismDORMA DOOR CONTROLS INC·Filed 1997·Granted Jun 22, 1999·128 cites·7 claims
- 0296US5687507AApparatus for selective alteration of operating parameters of a doorDORMA DOOR CONTROLS INC·Filed 1995·Granted Nov 18, 1997·141 cites·16 claims
- 0387US5956249AMethod for electromechanical control of the operational parameters of a door in conjunction with a mechanical door control mechanismDORMA DOOR CONTROLS INC·Filed 1997·Granted Sep 21, 1999·56 cites·8 claims
- 0481US4878265AHold-open mechanism for use with a door closerDORMA DOOR CONTROLS INC·Filed 1988·Granted Nov 7, 1989·57 cites·9 claims
- 0573US6002217ADoor operating systemDORMA DOOR CONTROLS INC·Filed 1997·Granted Dec 14, 1999·41 cites·1 claims
- 0667US8347675B2Positional multiplex keyway systemDORMA DOOR CONTROLS INC·Filed 2009·Granted Jan 8, 2013·4 cites·32 claims
- 0761US6499185B1Apparatus for holding a door openDORMA DOOR CONTROLS INC·Filed 2000·Granted Dec 31, 2002·15 cites·11 claims
- 0861US4375735AAir lock door control apparatusDORMA DOOR CONTROLS INC·Filed 1981·Granted Mar 8, 1983·25 cites·13 claims
- 0959US7571629B2Positional multiplex keyway systemDORMA DOOR CONTROLS INC·Filed 2006·Granted Aug 11, 2009·2 cites·13 claims
- 1059US4419787ADoor closer assist linkageDORMA DOOR CONTROLS INC·Filed 1982·Granted Dec 13, 1983·24 cites·8 claims
- 1159US4394787AHydraulic door closer constructionDORMA DOOR CONTROLS INC·Filed 1978·Granted Jul 26, 1983·20 cites·5 claims
- 1251US2006212398A1Key security method and systemDORMA DOOR CONTROLS INC·Filed 2006·Application pending·0 cites
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →