David W. W. Cheng

Person

San Mateo, CA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Variable threshold setting for rotor identification in centrifuges
- Patent number 5,752,910
- Issue date May 19, 1998
- Beckman Instruments, Inc.
- David Wai-Wing Cheng
- B04 - CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL...
Information Patent Grant
Tachometer and rotor identification system for centrifuges
- Patent number 5,383,838
- Issue date Jan 24, 1995
- Beckman Instruments, Inc.
- David W. Cheng
- B04 - CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL...
Information Patent Grant
Coding of maximum operating speed on centrifuge rotors and detectio...
- Patent number 5,221,250
- Issue date Jun 22, 1993
- Beckman Instruments, Inc.
- David W. Cheng
- B04 - CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL...
Information Patent Grant
Vial holder
- Patent number 4,865,090
- Issue date Sep 12, 1989
- Beckman Instruments, Inc.
- Victor P. Burolla
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Lid retention apparatus for coverage centrifuge rotors
- Patent number 4,850,951
- Issue date Jul 25, 1989
- Beckman Instruments, Inc.
- David W. Cheng
- B04 - CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL...
Information Patent Grant
Breakaway base for an ultracentrifuge rotor
- Patent number 4,568,325
- Issue date Feb 4, 1986
- Beckman Instruments, Inc.
- David W. W. Cheng
- B04 - CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL...

David W. W. Cheng

Person

Patents Grantslast 30 patents

Variable threshold setting for rotor identification in centrifuges

Tachometer and rotor identification system for centrifuges

Coding of maximum operating speed on centrifuge rotors and detectio...

Vial holder

Lid retention apparatus for coverage centrifuge rotors

Breakaway base for an ultracentrifuge rotor