Canadian Patents & Dev. Limited

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Ottawa, CA

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Patents Grantslast 30 patents

Information Patent Grant
Modal-insensitive biconical taper couplers
- Patent number 4,586,784
- Issue date May 6, 1986
- Canadian Patents & Dev. Limited
- Yves Tremblay
- G02 - OPTICS
Information Patent Grant
Waveguide with dielectric coated flange antenna feed
- Patent number 4,516,129
- Issue date May 7, 1985
- Canadian Patents & Dev. Ltd.
- Apisak Ittipiboon
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Voltage controlled current switch with short circuit protection
- Patent number 4,509,102
- Issue date Apr 2, 1985
- Canadian Patents & Dev. Limited
- John B. Ayer
- G01 - MEASURING TESTING
Information Patent Grant
Apparatus for fast access to a series of stored images
- Patent number 4,432,071
- Issue date Feb 14, 1984
- Canadian Patents & Dev. Limited
- Alexander Szabo
- G11 - INFORMATION STORAGE
Information Patent Grant
Repellent for black fly
- Patent number 4,427,700
- Issue date Jan 24, 1984
- Canadian Patents & Dev. Ltd.
- Arthur Retnakaran
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information Patent Grant
Commutation circuits for thyristor inverters
- Patent number 4,405,977
- Issue date Sep 20, 1983
- Canadian Patents & Dev. Limited
- Pradeep M. Bhagwat
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method of controlling a solar system collector loop
- Patent number 4,397,301
- Issue date Aug 9, 1983
- Canadian Patents & Dev. Limited
- Thomas Onno
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Timed switch for an AC load
- Patent number 4,376,253
- Issue date Mar 8, 1983
- Canadian Patents & Dev. Limited
- Alan W. Levy
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
DC-Side commutated inverter
- Patent number 4,376,296
- Issue date Mar 8, 1983
- Canadian Patents & Dev. Ltd.
- Pradeep M. Bhagwat
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Broadband high speed optoelectronic semiconductor switch
- Patent number 4,369,371
- Issue date Jan 18, 1983
- Canadian Patents & Dev. Limited
- Elmer H. Hara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Time jitter determining apparatus
- Patent number 4,350,879
- Issue date Sep 21, 1982
- Canadian Patents & Dev. Limited
- Kamilo Feher
- G01 - MEASURING TESTING
Information Patent Grant
Method of casting elongated members of reactive metals and reactive...
- Patent number 4,341,261
- Issue date Jul 27, 1982
- Canadian Patents & Dev. Ltd.
- Robert Thomson
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Rare-gas hydrogen-halide excimer laser with hydrogen additive
- Patent number 4,340,968
- Issue date Jul 20, 1982
- Canadian Patents & Dev. Ltd.
- Clive Willis
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Microwave apparatus for heating liquid in a closed plastic container
- Patent number 4,336,435
- Issue date Jun 22, 1982
- Canadian Patents & Dev. Limited
- Satish Kashyap
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Non-contact optical apparatus for measuring the length or speed of...
- Patent number 4,334,779
- Issue date Jun 15, 1982
- Canadian Patents & Dev. Limited
- Jacques Domey
- G01 - MEASURING TESTING
Information Patent Grant
Alternating current comparator bridge for resistance measurement
- Patent number 4,322,679
- Issue date Mar 30, 1982
- Canadian Patents & Dev. Limited
- William J. M. Moore
- G01 - MEASURING TESTING
Information Patent Grant
Method of concentrating natural fruit juices by reverse osmosis
- Patent number 4,322,448
- Issue date Mar 30, 1982
- Canadian Patents & Dev. Ltd.
- Takeshi Matsuura
- A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
Information Patent Grant
Multi-filar moving coil loudspeaker
- Patent number 4,300,022
- Issue date Nov 10, 1981
- Canadian Patents & Dev. Limited
- Richard Hastings-James
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Active quadrature current reference source
- Patent number 4,296,369
- Issue date Oct 20, 1981
- Canadian Patents & Dev. Ltd.
- William J. M. Moore
- G05 - CONTROLLING REGULATING
Information Patent Grant
High power laser and cathode structure thereof
- Patent number 4,288,758
- Issue date Sep 8, 1981
- Canadian Patents & Dev. Limited
- Herb J. J. Seguin
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optoelectric cross-point switch
- Patent number 4,286,171
- Issue date Aug 25, 1981
- Canadian Patents & Dev. Ltd.
- Elmer H. Hara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Sea water conductivity cell
- Patent number 4,275,352
- Issue date Jun 23, 1981
- Canadian Patents & Dev. Ltd.
- Robert B. Sudar
- G01 - MEASURING TESTING
Information Patent Grant
Bioadsorption alteration of iron sulfide surfaces
- Patent number 4,269,699
- Issue date May 26, 1981
- Canadian Patents & Dev. Ltd.
- Ronald G. L. McCready
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Loudspeaker telephone apparatus
- Patent number 4,251,689
- Issue date Feb 17, 1981
- Canadian Patents & Dev. Ltd.
- Richard Hastings-James
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Canadian Patents & Dev. Limited

Organization

Patents Grantslast 30 patents

Modal-insensitive biconical taper couplers

Waveguide with dielectric coated flange antenna feed

Voltage controlled current switch with short circuit protection

Apparatus for fast access to a series of stored images

Repellent for black fly

Commutation circuits for thyristor inverters

Method of controlling a solar system collector loop

Timed switch for an AC load

DC-Side commutated inverter

Broadband high speed optoelectronic semiconductor switch

Time jitter determining apparatus

Method of casting elongated members of reactive metals and reactive...

Rare-gas hydrogen-halide excimer laser with hydrogen additive

Microwave apparatus for heating liquid in a closed plastic container

Non-contact optical apparatus for measuring the length or speed of...

Alternating current comparator bridge for resistance measurement

Method of concentrating natural fruit juices by reverse osmosis

Multi-filar moving coil loudspeaker

Active quadrature current reference source

High power laser and cathode structure thereof

Optoelectric cross-point switch

Sea water conductivity cell

Bioadsorption alteration of iron sulfide surfaces

Loudspeaker telephone apparatus