Inventor

Frederick Y. Cho

Inventor

Scottsdale, AZ, US

Overview

34→

Patents

1976–1997

Patent span

Electricity

Primary field (CPC H)

Patents· 34 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H03Hprimary

H03HImpedance networks, e.g. resonant circuits44%

Y10TTechnical subjects covered by former us classification16%

H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h1010%

G01RMeasuring electric variables4%

H05KPrinted circuits4%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests4%

G01NInvestigating or analysing materials by determining their chemical or physical properties2%

G02BOptical elements, systems or apparatus2%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein2%

G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices2%

PatentTitleYear

5,635,883'Acoustic wave filter with filter-shaping element and method'1997 5,514,626'Method for reducing heterostructure acoustic charge transport device saw drive power requirements'1996 RE035191'Method for reducing heterostructure acoustic charge transport device SAW drive power requirements'1996 5,475,311'Ionization gas analyzer and method'1995 D0359960'Clip-on earpiece for a portable handset telephone'1995 5,420,472'Method and apparatus for thermal coefficient of expansion matched substrate attachment'1995 5,414,214'Resistance heated, sealed microfabricated device package method and apparatus'1995 5,389,806'Apparatus for reducing heterostructure acoustic charge transport device saw drive power requirements'1995 5,327,626'Method for processing robust acoustic reflectors'1994 5,301,420'Method for manufacturing a light weight circuit module'1994 5,296,824'Low loss wide bandwidth parallel channel acoustic filter'1994 5,270,606'Processing robust acoustic reflectors'1993 5,265,267'Integrated circuit including a surface acoustic wave transformer and a balanced mixer'1993 5,254,962'Combined acoustic wave device and ceramic block filter structure'1993 5,237,235'Surface acoustic wave device package'1993 5,212,115'Method for microelectronic device packaging employing capacitively coupled connections'1993 5,212,420'Method and apparatus for surface acoustic wave reflector grating'1993 5,155,406'Multiple nearest neighbor filter bank'1992 5,119,172'Microelectronic device package employing capacitively coupled connections'1992 5,073,807'Method and apparatus for achieving multiple acoustic charge transport device input contacts'1991 5,070,271'Multi-dimensional acoustic charge transport device'1991 5,047,363'Method and apparatus for reducing heterostructure acoustic charge transport device saw drive power requirements'1991 4,701,008'Optical waveguide including superstrate of niobium or silicon oxynitride and method of making same'1987 4,686,111'Passivated and low scatter acoustic wave devices and method thereof'1987 4,668,909'Piezoelectric material testing method and apparatus'1987 4,652,290'Method for making optical channel waveguides and product manufactured thereby'1987 4,626,775'Radio frequency probing apparatus for surface acoustic wave devices'1986 4,612,274'Electron beam/optical hybrid lithographic resist process in acoustic wave devices'1986 4,546,283'Conductor structure for thick film electrical device'1985 4,506,239'Compound surface acoustic wave matched filters'1985 4,450,374'Oxygen-plasma passivated and low scatter acoustic wave devices'1984 4,434,383'Temperature stable surface acoustic wave device'1984 4,400,640'Temperature stable cuts of quartz'1983 3,931,597'Apparatus and method for phase-encoded surface wave devices'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976Patents assigned to MAGNAVOX CO (1)· patent assignee history

1976Based in Fort Wayne, IN, US· patent location history

1983–1997Patents assigned to MOTOROLA INC (30)· patent assignee history

1983–1996Based in Scottsdale, AZ, US· patent location history

1985–1987Patents assigned to US AIR FORCE (3)· patent assignee history

1994–1995Based in Higley, AZ, US· patent location history

1997Based in Gilbert, AZ, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
MOTOROLA INC	30	1983–1997
US AIR FORCE	3	1985–1987
MAGNAVOX CO	1	1976

Locations

Location	Patents	Span
Scottsdale, AZ, US	29	1983–1996
Higley, AZ, US	3	1994–1995
Gilbert, AZ, US	1	1997
Fort Wayne, IN, US	1	1976