Inventor
Gilbert W. Wierschke
Inventor
West Simsbury, CT, US
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B66Bprimary
B66BElevators60%
E04FFinishing work on buildings, e.g. stairs, floors10%
G05BControl or regulating systems in general10%
H01HElectric switches10%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests10%
PatentTitleYear
9,010,499'Multi-car elevator hoistway separation assurance'20156,578,673'Concrete elevator rail and guidance system'20035,924,524'Integrated, multi-level elevator shuttle'19995,823,299'Shuttle elevators feeding local elevators'19985,749,441'Extra deck elevator shuttle'19985,695,024'Car operated safety gate for horizontally transferrable elevator cab'19974,338,650'Fail-safe relay driving'1982Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1982–2015Patents assigned to OTIS ELEVATOR CO (7)· patent assignee history
1982Based in Englewood, CO, US· patent location history
1997–2003Based in West Simsbury, CT, US· patent location history
2015Patents assigned to MCCARTHY RICHARD C (1)· patent assignee history
2015Patents assigned to PERUGGI RICHARD (1)· patent assignee history
2015Patents assigned to ROBERTS RANDALL K (1)· patent assignee history
2015Patents assigned to SCHIENDA GREG A (1)· patent assignee history
2015Based in Littleton, CO, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| OTIS ELEVATOR CO | 7 | 1982–2015 |
| MCCARTHY RICHARD C | 1 | 2015 |
| PERUGGI RICHARD | 1 | 2015 |
| ROBERTS RANDALL K | 1 | 2015 |
| SCHIENDA GREG A | 1 | 2015 |
Locations
| Location | Patents | Span |
|---|---|---|
| West Simsbury, CT, US | 5 | 1997–2003 |
| Littleton, CO, US | 1 | 2015 |
| Englewood, CO, US | 1 | 1982 |