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Michael Callahan
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New York, NY, US
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Patents Grants
last 30 patents
Information
Patent Grant
Twist-lock plug improved to positively lock with prior art receptacles
Patent number
11,761,610
Issue date
Sep 19, 2023
Michael Callahan
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Distributable dimmer package having a six-circuit output connector...
Patent number
11,592,167
Issue date
Feb 28, 2023
Michael Callahan
F21 - LIGHTING
Information
Patent Grant
Leg-carriage type trusses
Patent number
11,359,374
Issue date
Jun 14, 2022
Michael Callahan
E04 - BUILDING
Information
Patent Grant
Portable followspot stand having an improved range of height and ti...
Patent number
11,187,398
Issue date
Nov 30, 2021
Michael Callahan
F21 - LIGHTING
Information
Patent Grant
Apparatus for steering a light beam using two mirrors having only o...
Patent number
11,181,252
Issue date
Nov 23, 2021
Michael Callahan
F21 - LIGHTING
Information
Patent Grant
Adaptor for racking truss leg carriages
Patent number
11,002,012
Issue date
May 11, 2021
Michael Callahan
B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information
Patent Grant
Leg carriage type trusses
Patent number
10,745,915
Issue date
Aug 18, 2020
Michael Callahan
B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information
Patent Grant
Trusses and similar structures
Patent number
10,214,904
Issue date
Feb 26, 2019
Michael Callahan
B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information
Patent Grant
Power and data distribution in lighting systems
Patent number
6,469,457
Issue date
Oct 22, 2002
Michael Callahan
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Lighting systems
Patent number
6,211,627
Issue date
Apr 3, 2001
Michael Callahan
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Data distribution in lighting systems
Patent number
5,821,703
Issue date
Oct 13, 1998
Michael Callahan
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Inductorless controlled transition light dimmers optimizing output...
Patent number
5,672,941
Issue date
Sep 30, 1997
Michael Callahan
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Initializing controlled transition light dimmers
Patent number
5,629,607
Issue date
May 13, 1997
Michael Callahan
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Power and signal distribution in lighting systems
Patent number
5,455,490
Issue date
Oct 3, 1995
Michael Callahan
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Inductorless controlled transition and other light dimmers
Patent number
5,319,301
Issue date
Jun 7, 1994
Michael Callahan
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Inductorless controlled transition and other light dimmers
Patent number
5,225,765
Issue date
Jul 6, 1993
Michael Callahan
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Inductorless controlled transition and other light dimmers
Patent number
4,975,629
Issue date
Dec 4, 1990
Michael Callahan
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Improvements to control systems for variable parameter lighting fix...
Patent number
4,947,302
Issue date
Aug 7, 1990
Michael Callahan
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Apparatus for mechanically adjusting lighting fixture beam azimuth...
Patent number
4,931,916
Issue date
Jun 5, 1990
Michael Callahan
F21 - LIGHTING
Information
Patent Grant
Additive color-mixing light fixture employing a single moveable mul...
Patent number
4,894,760
Issue date
Jan 16, 1990
Michael Callahan
F21 - LIGHTING
Information
Patent Grant
Light dimmer for distributed use employing inductorless controlled...
Patent number
4,823,069
Issue date
Apr 18, 1989
Michael Callahan
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Control system for variable parameter lighting fixtures
Patent number
4,797,795
Issue date
Jan 10, 1989
Michael Callahan
F21 - LIGHTING
Information
Patent Grant
Apparatus for mechanically adjusting lighting fixture azimuth and e...
Patent number
4,769,743
Issue date
Sep 6, 1988
Michael Callahan
F21 - LIGHTING
Information
Patent Grant
Control system for variable parameter fixtures
Patent number
4,697,227
Issue date
Sep 29, 1987
Michael Callahan
F21 - LIGHTING
Information
Patent Grant
Improved inductorless phase control dimmer power stage with semicon...
Patent number
4,633,161
Issue date
Dec 30, 1986
Michael Callahan
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Color changer mechanism
Patent number
4,600,976
Issue date
Jul 15, 1986
Michael Callahan
F21 - LIGHTING
Information
Patent Grant
Buss structures for multiscene manual lighting consoles
Patent number
4,550,276
Issue date
Oct 29, 1985
Michael Callahan
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Followspot parameter feedback
Patent number
4,527,198
Issue date
Jul 2, 1985
Michael Callahan
F21 - LIGHTING
Information
Patent Grant
Azimuth and elevation control system
Patent number
4,460,943
Issue date
Jul 17, 1984
Michael Callahan
F21 - LIGHTING
Patents Applications
last 30 patents
Information
Patent Application
CHAIN MOTOR POWER DISTRIBUTION AND CONTROL
Publication number
20220324682
Publication date
Oct 13, 2022
Michael Callahan
B66 - HOISTING LIFTING HAULING
Information
Patent Application
PORTABLE ASSEMBLY FOR DISTRIBUTING BOTH AC POWER AND DIGITAL CONTRO...
Publication number
20220042670
Publication date
Feb 10, 2022
Michael Callahan
F21 - LIGHTING
Information
Patent Application
APPARATUS FOR STEERING A LIGHT BEAM USING TWO MIRRORS HAVING ONLY O...
Publication number
20220042673
Publication date
Feb 10, 2022
Michael Callahan
F21 - LIGHTING
Information
Patent Application
LEG-CARRIAGE TYPE TRUSSES
Publication number
20210262231
Publication date
Aug 26, 2021
Michael Callahan
E04 - BUILDING
Information
Patent Application
MULTI-PARTY PREPARED BEVERAGE ORDER POLLING AND CONSOLIDATION
Publication number
20210215329
Publication date
Jul 15, 2021
Michael Callahan
E04 - BUILDING
Information
Patent Application
IN HEIGHT-ADJUSTABLE FOLLOWSPOT SUPPORT
Publication number
20210025566
Publication date
Jan 28, 2021
Michael Callahan
F21 - LIGHTING
Information
Patent Application
LEG CARRIAGE TYPE TRUSSES
Publication number
20200340249
Publication date
Oct 29, 2020
Michael Callahan
F21 - LIGHTING
Information
Patent Application
LIGHTING EQUIPMENT
Publication number
20200109836
Publication date
Apr 9, 2020
Michael Callahan
F21 - LIGHTING
Information
Patent Application
Multi-Party Prepared Beverage Order Polling and Consolidation
Publication number
20190257508
Publication date
Aug 22, 2019
Michael Callahan
E04 - BUILDING
Information
Patent Application
TRUSSES AND SIMILAR STRUCTURES
Publication number
20190257084
Publication date
Aug 22, 2019
Michael Callahan
E04 - BUILDING
Information
Patent Application
Lighting Equipment
Publication number
20180292069
Publication date
Oct 11, 2018
Michael Callahan
F21 - LIGHTING
Information
Patent Application
Portable apparatus for conditioning air
Publication number
20170363277
Publication date
Dec 21, 2017
Michael Callahan
E04 - BUILDING
Information
Patent Application
TRUSSES AND SIMILAR STRUCTURES
Publication number
20170350123
Publication date
Dec 7, 2017
Michael Callahan
B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information
Patent Application
FOOD AND BEVERAGE PREPARATION AND RETAILING
Publication number
20150324937
Publication date
Nov 12, 2015
Michael Callahan
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
LIGHTING SYSTEMS AND IMPROVEMENTS THERETO
Publication number
20150315786
Publication date
Nov 5, 2015
Michael Callahan
E04 - BUILDING
Information
Patent Application
Lighting systems and components thereof
Publication number
20080165538
Publication date
Jul 10, 2008
Michael Callahan
F21 - LIGHTING
Information
Patent Application
Structures and components thereof
Publication number
20070193186
Publication date
Aug 23, 2007
Michael Callahan
E04 - BUILDING
Information
Patent Application
Lighting equipment
Publication number
20070070585
Publication date
Mar 29, 2007
Michael Callahan
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Application
Light modifier with spiral optical forms
Publication number
20070025742
Publication date
Feb 1, 2007
Michael Callahan
G02 - OPTICS
Information
Patent Application
Light modifier with spiral optical forms
Publication number
20060193641
Publication date
Aug 31, 2006
Michael Callahan
G02 - OPTICS
Information
Patent Application
Lighting systems and components thereof
Publication number
20060133079
Publication date
Jun 22, 2006
Michael Callahan
F21 - LIGHTING
Information
Patent Application
Method and system for providing access to content associated with a...
Publication number
20050144165
Publication date
Jun 30, 2005
Mohammad Hafizullah
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Lighting systems
Publication number
20050103326
Publication date
May 19, 2005
Michael Callahan
F24 - HEATING RANGES VENTILATING
Information
Patent Application
Lighting systems
Publication number
20040212324
Publication date
Oct 28, 2004
Michael Callahan
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Application
Structures and components thereof
Publication number
20040187426
Publication date
Sep 30, 2004
Michael Callahan
E04 - BUILDING
Information
Patent Application
Lighting systems
Publication number
20020014867
Publication date
Feb 7, 2002
Michael Callahan
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC