Cheng Chieh Lee

US Patent:

20110175789, Jul 21, 2011

Filed:

Nov 9, 2010

Appl. No.:

12/942932

Inventors:

Cheng Jung Lee - Santa Clara CA, US
Nhan Duc Nguyen - Oceanside CA, US
Ajay Gummalla - Sunnyvale CA, US

Assignee:

RAYSPAN CORPORATION - San Diego CA

International Classification:

H01Q 21/30
H04B 3/04
H01Q 1/36
H01Q 1/50

US Classification:

343853, 333 171, 343700 MS, 343850, 343876

Abstract:

Architectures and implementations of a transceiver system for wireless communications are presented, the system including one or more antennas supporting a single frequency band or multiple frequency bands, a transmit circuit, a receive circuit, and an isolation circuit that is coupled to the one or more antennas and the transmit and receive circuits and provides adequate isolation between the transmit circuit and the receive circuit.

US Patent:

43225012, Mar 30, 1982

Filed:

Sep 22, 1980

Appl. No.:

6/189414

Inventors:

Cheng H. Lee - Wyckoff NJ
Jay M. S. Henis - Creve Coeur MO

Assignee:

Monsanto Company - St. Louis MO

International Classification:

B01J 4112
C08F 832

US Classification:

521 32

Abstract:

A process is disclosed for quaternizing reactive substituent haloalkyl groups in hollow fiber polymer membranes wherein such haloalkyl groups are reacted with an amine quaternizing agent in the presence of an electrolyte compound and, preferably, in the presence of a cationic quaternary ammonium halide surfactant. In addition, there is disclosed a process of quaternizing the reactive haloalkyl groups in anisotropic hollow fiber polymer membranes by contacting and permeating a solution of an amine quaternizing agent from the surface of the membrane which is to be exposed to a dialysis feed solution.

US Patent:

20230045521, Feb 9, 2023

Filed:

May 23, 2022

Appl. No.:

17/751199

Inventors:

- Palo Alto CA, US
Ray Tanaka - Palo Alto CA, US
Victor Chau - Palo Alto CA, US
Charles Feng - Palo Alto CA, US
Cheng Han Lee - Palo Alto CA, US
Lubab Al-Khawaja - Palo Alto CA, US

International Classification:

G06Q 20/32

Abstract:

Systems and methods for processing transactions using a digital payment platform.

US Patent:

20200193405, Jun 18, 2020

Filed:

Dec 12, 2019

Appl. No.:

16/712581

Inventors:

- Palo Alto CA, US
Ray Tanaka - Palo Alto CA, US
Victor Chau - Palo Alto CA, US
Charles Feng - Palo Alto CA, US
Cheng Han Lee - Palo Alto CA, US
Lubab Al-Khawaja - Palo Alto CA, US

International Classification:

G06Q 20/20
G06Q 20/40
G06Q 20/02

Abstract:

Systems and methods for processing transactions using a digital payment platform.

US Patent:

20150102968, Apr 16, 2015

Filed:

Aug 25, 2014

Appl. No.:

14/467708

Inventors:

- Schaffhausen, CH
Cheng Jung Lee - Santa Clara CA, US
Ajay Gummalla - Sunnyvale CA, US

International Classification:

H01Q 5/328
H01Q 9/04

US Classification:

343722

Abstract:

Antenna devices and techniques that provide specific control of the spatial distributions of DC and RF signals at various positions in a wireless apparatus are disclosed. The wireless apparatus includes various device components each having specifications for achieving desired operations in antenna devices.