Douglas R. Jachowski

Person

Redwood City, CA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Dual-mode dielectric resonator bandstop filter
- Patent number 5,798,676
- Issue date Aug 25, 1998
- Allen Telecom Inc.
- Douglas R. Jachowski
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optimum, multiple signal path, multiple-mode filters and method for...
- Patent number 5,576,674
- Issue date Nov 19, 1996
- Allen Telecom Group, Incorporated
- Douglas R. Jachowski
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Apparatus for providing desired coupling in dual-mode dielectric re...
- Patent number 5,495,216
- Issue date Feb 27, 1996
- Allen Telecom Group, Inc.
- Douglas Jachowski
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Compact, low-intermodulation multiplexer employing interdigital fil...
- Patent number 5,446,729
- Issue date Aug 29, 1995
- Allen Telecom Group, Inc.
- Douglas R. Jachowski
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
RF filters and multiplexers with resonator decouplers
- Patent number 5,428,325
- Issue date Jun 27, 1995
- Allen Telecom Group, Inc.
- Douglas R. Jachowski
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Folded multiple bandpass filter with various couplings
- Patent number 5,410,284
- Issue date Apr 25, 1995
- Allen Telecom Group, Inc.
- Douglas R. Jachowski
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Bandstop filter having symmetrically altered or compensated quarter...
- Patent number 5,191,304
- Issue date Mar 2, 1993
- Orion Industries, Inc.
- Douglas R. Jachowski
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Narrow-band, bandstop filter
- Patent number 5,065,119
- Issue date Nov 12, 1991
- Orion Industries, Inc.
- Douglas R. Jachowski
- H01 - BASIC ELECTRIC ELEMENTS

Douglas R. Jachowski

Person

Patents Grantslast 30 patents

Dual-mode dielectric resonator bandstop filter

Optimum, multiple signal path, multiple-mode filters and method for...

Apparatus for providing desired coupling in dual-mode dielectric re...

Compact, low-intermodulation multiplexer employing interdigital fil...

RF filters and multiplexers with resonator decouplers

Folded multiple bandpass filter with various couplings

Bandstop filter having symmetrically altered or compensated quarter...

Narrow-band, bandstop filter