Inventor
Leon Yulkowski
Inventor
Bloomfield Hills, MI, US
Overview
Patents· 23 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E05Fprimary
E05FDevices for moving wings into open or closed position21%
E05YIndexing scheme associated with subclasses e05d and e05f, relating to construction elements, electric control, power supply, power signal or transmission, user interfaces, mounting or coupling, details, accessories, auxiliary operations not otherwise provided for, application thereof21%
G07CTime or attendance registers10%
E05CBolts or fastening devices for wings, specially for doors or windows8%
E06BFixed or movable closures for openings in buildings, vehicles, fences or like enclosures in general, e.g. doors, windows, blinds, gates8%
G08BSignalling systems, e.g. personal calling systems8%
Y10TTechnical subjects covered by former us classification8%
E05DHinges or suspension devices for doors, windows or wings6%
E05BLocks4%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests3%
PatentTitleYear
11,098,517Door operator and clutch202111,028,630Door monitoring system202110,415,294Door monitoring system201910,378,262Door operator and clutch201910,221,609Concealed electrical door operator201910,024,096Door monitoring system20189,651,130'Gear assembly with spiral gears'20179,536,357'Door monitoring system'20178,907,791'Door monitoring system'20148,844,200'Electrical door operator'20148,653,982'Door monitoring system'20148,261,491'Concealed electrical door operator'20126,705,047'Door and door closer assembly'20046,259,352'Door lock system'20016,183,023'Door with integrated fire exit device'20016,049,287'Door with integrated smoke detector and hold open'20005,400,474'Suspension for hinged door'19955,349,782'Door construction having improved locking assembly'19945,297,315'Suspension for hinged door'19944,545,607'Door construction'19854,093,284'Door construction'19783,973,289'Door hinge'19763,969,845'Door construction'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–2019Patents assigned to YULKOWSKI LEON (10)· patent assignee history
1976–2021Based in Bloomfield Hills, MI, US· patent location history
1978–1995Based in Pontiac, MI, US· patent location history
2012–2019Patents assigned to EDWARDS GERARD (3)· patent assignee history
2012–2019Patents assigned to GEBHART STEVE (3)· patent assignee history
2012–2019Patents assigned to GLOBE MOTORS INC (3)· patent assignee history
2014–2021Patents assigned to TD IP HOLDCO LLC (7)· patent assignee history
2021Based in West Bloomfield, MI, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| YULKOWSKI LEONself | 10 | 1976–2019 |
| TD IP HOLDCO LLC | 7 | 2014–2021 |
| EDWARDS GERARD | 3 | 2012–2019 |
| GEBHART STEVE | 3 | 2012–2019 |
| GLOBE MOTORS INC | 3 | 2012–2019 |
Locations
| Location | Patents | Span |
|---|---|---|
| Bloomfield Hills, MI, US | 18 | 1976–2021 |
| Pontiac, MI, US | 4 | 1978–1995 |
| West Bloomfield, MI, US | 1 | 2021 |