Inventor
Alfred K. Tengan
Inventor
Huntington Beach, CA, US
Overview
Patents· 5 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
Y10Tprimary
Y10TTechnical subjects covered by former us classification20%
B64CAeroplanes10%
F04BPositive-displacement machines for liquids10%
F15BSystems acting by means of fluids in general10%
F16DCouplings for transmitting rotation10%
F16HGearing10%
F16KValves10%
G05GControl devices or systems insofar as characterised by mechanical features only10%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests10%
PatentTitleYear
6,419,606'Aircraft control surface drive apparatus'20026,298,661'Energy efficient hydraulic motor control system'20015,937,990'Transmission with load brake'19995,235,873'Backlash eliminator'19934,244,398'Check valve assembly having valve opening prior to passing flow and flow shut off prior to valve closing'1981Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1981Patents assigned to MOOG INC (1)· patent assignee history
1981–2002Based in Huntington Beach, CA, US· patent location history
1993Patents assigned to HYDRAULIC UNITS INC (1)· patent assignee history
1999Patents assigned to GEC MARCONI AEROSPACE INC (1)· patent assignee history
1999Based in Randolph, NJ, US· patent location history
2001–2002Patents assigned to EATON CORP (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| EATON CORP | 2 | 2001–2002 |
| GEC MARCONI AEROSPACE INC | 1 | 1999 |
| HYDRAULIC UNITS INC | 1 | 1993 |
| MOOG INC | 1 | 1981 |
Locations
| Location | Patents | Span |
|---|---|---|
| Huntington Beach, California, US | 4 | 1981–2002 |
| Randolph, New Jersey, US | 1 | 1999 |