Don Dongcho Ha

Follow

Person

Long Beach, CA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Lateral thruster unit for marine vessels
- Patent number 7,644,675
- Issue date Jan 12, 2010
- Don Dongcho Ha
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
Information Patent Grant
Lateral thruster unit for marine vessels
- Patent number 7,530,319
- Issue date May 12, 2009
- Don Dongcho Ha
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
Information Patent Grant
Auto-eject gun-lock device with ring-mounted key
- Patent number 7,150,122
- Issue date Dec 19, 2006
- Don Dongcho Ha
- F41 - WEAPONS
Information Patent Grant
Lateral thrust drive unit for marine vessels
- Patent number 6,964,590
- Issue date Nov 15, 2005
- Don Dongcho Ha
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
Information Patent Grant
Valve mechanism
- Patent number 5,785,297
- Issue date Jul 28, 1998
- Millipore Corporation
- Don Dongcho Ha
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Fluid flow meter with reduced orientation sensitivity
- Patent number 5,763,774
- Issue date Jun 9, 1998
- Millipore Corporation
- Don Dongcho Ha
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
PRESSURE-OPERATED CHECK VALVE
- Publication number 20200307820
- Publication date Oct 1, 2020
- Parker-Hannifin Corporation
- Don Ha
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
AUTO-EJECT GUN-LOCK DEVICE WITH RING-MOUNTED KEY
- Publication number 20060288624
- Publication date Dec 28, 2006
- Don Dongcho Ha
- F41 - WEAPONS