Issued Patents All Time
Showing 25 most recent of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12291912 | Door system having a swing interlock system | Vinay Patel, Ronald Laliberte, James Cavanaugh | 2025-05-06 |
| 12168893 | Slide latching system for a door system | Vinay Patel, Ronald Laliberte, James Cavanaugh, Daniel R. Seymour | 2024-12-17 |
| 11555344 | Door system having a swing interlock system | Vinay Patel, Ronald Laliberte, James Cavanaugh | 2023-01-17 |
| 8997401 | Bi-parting, bi-directional door system | Frank Howard Luke, John Andrew Nurse, Vinay Patel | 2015-04-07 |
| 8756864 | Slide door | Larry Hamaker, Prasad Anand Sahasrabudhe, Michael A. Zabbo, Vito A. Spinelli | 2014-06-24 |
| 8627604 | Bypass door | Daniel R. Seymour, Vito A. Spinelli | 2014-01-14 |
| 8443549 | Sliding door with large opening | Michael Arthur Salvietti, Dwight Edward Reed, Daniel R. Seymour, Michael A. Zabbo, Vito A. Spinelli +1 more | 2013-05-21 |
| 8365469 | Door operating system | Michael S. Tignor | 2013-02-05 |
| 6786006 | Automatic door assembly and door operator therefor | Brian D. Hass | 2004-09-07 |
| 6588153 | Power door kit | — | 2003-07-08 |
| 6553717 | Retrofit power door assembly | Robert A. St. John, Quan H. Nguyen | 2003-04-29 |
| 6530178 | Automatic door assembly and door operator therefor | Brian D. Hass | 2003-03-11 |
| 6481160 | Axial door operator | — | 2002-11-19 |
| 6336294 | Automatic door assembly and door operator therefor | Brian D. Hass | 2002-01-08 |
| 6182516 | Low-cost, easy-to-use, dynamometer | — | 2001-02-06 |
| 5949036 | Double linear motor and elevator doors using same | Zbigniew Piech | 1999-09-07 |
| 5918706 | Hold closed feature for elevator car doors | Richard N. Fargo | 1999-07-06 |
| 5880414 | Elevator door brake, brake, lock, and hold-open | Jerome F. Jaminet, Frank Guliuzza, Jr., Edward E. Ahigian, Richard E. Kulak, Thomas M. McHugh +3 more | 1999-03-09 |
| 5862887 | High performance linear induction motor door operator | Bruce P. Swaybill, William L. King, Richard E. Kulak, Michael J. Tracey, K. Narasimha Reddy +1 more | 1999-01-26 |
| 5808246 | Triac drive for three-phase line-powered linear induction motor elevator door operator | Richard E. Peruggi, Thomas M. McHugh, Edward E. Ahigian, Jerome F. Jaminet, Thomas He +3 more | 1998-09-15 |
| 5736693 | Elevator door drive using dual secondary linear induction motor | Zbigniew Piech, Jerome F. Jaminet, Edward E. Ahigian, Richard E. Kulak, Thomas M. McHugh +3 more | 1998-04-07 |
| 5732796 | Elevator car evacuation deterrent device | Edward E. Ahigian, David W. Barrett, Thomas M. McHugh, Jerome F. Jaminet, Thomas He +2 more | 1998-03-31 |
| 5682023 | Time-optimal control of an AC line-driven linear motor elevator door operator | Thomas M. McHugh, Richard E. Peruggi, Edward E. Ahigian, Jerome F. Jaminet, Thomas He +2 more | 1997-10-28 |
| 5669465 | Elevator hoistway door bolt lock | Richard E. Kulak, Thomas M. McHugh, Edward E. Ahigian, Jerome F. Jaminet, Thomas He +2 more | 1997-09-23 |
| 5668355 | Elevator cab door drive system | Jerome F. Jaminet, Edward E. Ahigian, Thomas M. McHugh, Thomas He, Richard E. Peruggi +2 more | 1997-09-16 |