Inventor
Eiichi Yamakawa
Inventor
Kakamigahara, JP
Overview
Patents· 18 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B64Cprimary
B64CAeroplanes39%
Y02TClimate change mitigation technologies related to transportation16%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests16%
F16HGearing8%
G05DSystems for controlling or regulating non-electric variables5%
Y10TTechnical subjects covered by former us classification5%
G01CMeasuring distances, levels or bearings3%
G02BOptical elements, systems or apparatus3%
G08GTraffic control systems3%
H02NElectric machines not otherwise provided for3%
PatentTitleYear
6,499,690'Rotor blade flap drive apparatus'20026,454,207'Flap support mechanism and a flap-equipped rotor blade'20026,315,522'Helicopter blade aerofoil and helicopter blade'20016,312,358'Constant speed drive apparatus for aircraft generator and traction speed change apparatus'20016,273,681'Rotor blade flap driving apparatus'20016,272,404'Flight path indicated apparatus'20016,254,504'Power transmission apparatus for helicopter'20016,231,308'Rotor blade for rotary wing aircraft'20016,198,991'Low-noise level landing apparatus and system for helicopters'20016,190,132'Rotor blade for rotorcraft'20016,164,918'Helicopter blade aerofoil'20006,109,870'Rotor blade flap driving apparatus'20006,053,452'Compensation apparatus for main rotor torque'20005,961,290'Helicopter blade aerofoil'19995,957,662'helicopter blade aerofoil'19995,782,433'Engine deceleration device and power transmission device for helicopters'19985,655,878'Higher harmonic control apparatus for a helicopter rotor'19975,639,215'Helicopter rotor equipped with flaps'1997Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1997–2002Patents assigned to INST ADV TECH HELICOPTER LTD (18)· patent assignee history
1997–2002Based in Kakamigahara, JP· patent location history
2001Based in Kakmigahara, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| INST ADV TECH HELICOPTER LTD | 18 | 1997–2002 |
Locations
| Location | Patents | Span |
|---|---|---|
| Kakamigahara, JP | 17 | 1997–2002 |
| Kakmigahara, JP | 1 | 2001 |