Inventor · disambiguated record
Leon Yulkowski
Also filed as: YULKOWSKI LEON · YULKOWSKI LEON B
25 granted patents·5 pending applications·730 citations·filing 1974–2023
97Inventor score
Top patents by PatentIndex Score
30 records- 0198US6705047B2Door and door closer assemblyFiled 2001·Granted Mar 16, 2004·114 cites·23 claims
- 0297US11713608B2Door monitoring systemTD IP HOLDCO LLC·Filed 2021·Granted Aug 1, 2023·5 cites·20 claims
- 0396US8653982B2Door monitoring systemYULKOWSKI PATRICIA·Filed 2010·Granted Feb 18, 2014·79 cites·47 claims
- 0495US8907791B2Door monitoring systemYULKOWSKI PATRICIA·Filed 2013·Granted Dec 9, 2014·19 cites·30 claims
- 0595US8844200B2Electrical door operatorYULKOWSKI LEON·Filed 2010·Granted Sep 30, 2014·35 cites·22 claims
- 0695US8261491B2Concealed electrical door operatorYULKOWSKI LEON·Filed 2009·Granted Sep 11, 2012·25 cites·20 claims
- 0794US10415294B2Door monitoring systemTD IP HOLDCO LLC·Filed 2018·Granted Sep 17, 2019·8 cites·20 claims
- 0894US6049287ADoor with integrated smoke detector and hold openFiled 1998·Granted Apr 11, 2000·94 cites·25 claims
- 0993US11199041B2Concealed electrical door operatorTD IP HOLDCO LLC·Filed 2018·Granted Dec 14, 2021·10 cites·20 claims
- 1092US10378262B2Door operator and clutchYULKOWSKI LEON·Filed 2015·Granted Aug 13, 2019·11 cites·20 claims
- 1191US10024096B2Door monitoring systemTD IP HOLDCO LLC·Filed 2016·Granted Jul 17, 2018·9 cites·20 claims
- 1291US9536357B2Door monitoring systemTD IP HOLDCO LLC·Filed 2014·Granted Jan 3, 2017·10 cites·17 claims
- 1387US10221609B2Concealed electrical door operatorYULKOWSKI LEON·Filed 2012·Granted Mar 5, 2019·11 cites·22 claims
- 1485US11028630B2Door monitoring systemTD IP HOLDCO LLC·Filed 2019·Granted Jun 8, 2021·3 cites·20 claims
- 1584US11098517B2Door operator and clutchTD IP HOLDCO LLC·Filed 2019·Granted Aug 24, 2021·4 cites·20 claims
- 1682US5349782ADoor construction having improved locking assemblyYULKOWSKI LEON B·Filed 1993·Granted Sep 27, 1994·57 cites·18 claims
- 1779US9651130B2Gear assembly with spiral gearsTD IP HOLDCO LLC·Filed 2015·Granted May 16, 2017·5 cites·24 claims
- 1877US2024084635A1Door monitoring systemTD IP HOLDCO LLC·Filed 2023·Application pending·0 cites
- 1975US6259352B1Door lock systemFiled 1998·Granted Jul 10, 2001·146 cites·43 claims
- 2068US2022010606A1Door operator and clutchTD IP HOLDCO LLC·Filed 2021·Application pending·0 cites
- 2167US2022136313A1Concealed electrical door operatorTD IP HOLDCO LLC·Filed 2021·Application pending·0 cites
- 2260US4545607ADoor constructionYULKOWSKI LEON·Filed 1982·Granted Oct 8, 1985·16 cites·17 claims
- 2359US6183023B1Door with integrated fire exit deviceFiled 1998·Granted Feb 6, 2001·23 cites·27 claims
- 2454US4093284ADoor constructionYULKOWSKI LEON·Filed 1976·Granted Jun 6, 1978·11 cites·44 claims
- 2552US2015059249A1Electrical door operatorTOTAL DOOR II INC·Filed 2014·Application pending·0 cites
- 2651US3969845ADoor constructionYULKOWSKI LEON·Filed 1974·Granted Jul 20, 1976·13 cites·15 claims
- 2745US3973289ADoor hingeYULKOWSKI LEON B·Filed 1975·Granted Aug 10, 1976·10 cites·21 claims
- 2842US2003033786A1Fire door assemblyFiled 2001·Application pending·0 cites
- 2935US5297315ASuspension for hinged doorYULKOWSKI LEON·Filed 1992·Granted Mar 29, 1994·9 cites·15 claims
- 3031US5400474ASuspension for hinged doorFiled 1993·Granted Mar 28, 1995·3 cites·20 claims
Join the waitlist — get patent alerts
Get an alert when Leon Yulkowski files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →