Inventor
Dirk J. Boomgaard
Inventor
Monroeville, PA, US
Overview
Patents· 13 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Bprimary
H04BTransmission19%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution19%
G21CNuclear reactors15%
B66BElevators7%
G01BMeasuring length, thickness or similar linear dimensions7%
H04LTransmission of digital information, e.g. telegraphic communication7%
G03BApparatus or arrangements for taking photographs or for projecting or viewing them4%
G05BControl or regulating systems in general4%
G05DSystems for controlling or regulating non-electric variables4%
H01FMagnets4%
PatentTitleYear
5,504,454'Demodulator for powerline carrier communications'19964,962,496'Transmission of data via power lines'19904,903,006'Power line communication system'19904,885,563'Power line carrier communication system'19894,776,433'Elevator door control system'19884,714,926'Rod position indication system with temperature compensation'19874,668,465'Method and apparatus for remotely monitoring a process carried out in a containment structure'19874,646,319'Bidirectional bus coupler presenting peak impedance at carrier frequency'19874,631,537'Method for temperature compensating a rod position indication system'19864,629,983'Digital rod position detector system'19864,381,852'Automatic tensioning control for winding stator coils'19834,278,150'Elevator system'19814,118,717'Automatic film-exposure control system and electrical power supply means for a photographic camera'1978Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1978–1996Patents assigned to WESTINGHOUSE ELECTRIC CORP (10)· patent assignee history
1978–1996Based in Monroeville, PA, US· patent location history
1989–1990Patents assigned to THERMO KING CORP (2)· patent assignee history
1990Patents assigned to ABB POWER T & D CO (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| WESTINGHOUSE ELECTRIC CORP | 10 | 1978–1996 |
| THERMO KING CORP | 2 | 1989–1990 |
| ABB POWER T & D CO | 1 | 1990 |
Locations
| Location | Patents | Span |
|---|---|---|
| Monroeville, Pennsylvania, US | 13 | 1978–1996 |