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Charles A. Walton
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Los Gatos, CA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Proximity card with incorporated PIN code protection
Patent number
6,742,714
Issue date
Jun 1, 2004
Kenneth B. Cecil
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Body motion detecting system with correction for tilt of accelerome...
Patent number
6,590,536
Issue date
Jul 8, 2003
Charles A. Walton
A63 - SPORTS GAMES AMUSEMENTS
Information
Patent Grant
Proximity card with incorporated pin code protection
Patent number
6,340,116
Issue date
Jan 22, 2002
Kenneth B. Cecil
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Exercising system with electronic inertial game playing
Patent number
5,989,157
Issue date
Nov 23, 1999
Charles A. Walton
A63 - SPORTS GAMES AMUSEMENTS
Information
Patent Grant
Multi-channel system with multiple information sources
Patent number
5,896,215
Issue date
Apr 20, 1999
Kenneth B. Cecil
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Programmer's anti-slump chair with knee support
Patent number
5,342,116
Issue date
Aug 30, 1994
Charles A. Walton
A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
Information
Patent Grant
Proximity identification system with flux concentration in operatin...
Patent number
5,159,332
Issue date
Oct 27, 1992
Charles A. Walton
G01 - MEASURING TESTING
Information
Patent Grant
Radiation helmet
Patent number
5,022,099
Issue date
Jun 11, 1991
Charles A. Walton
A42 - HEADWEAR
Information
Patent Grant
Capacitance coupled proximity identification system
Patent number
5,021,778
Issue date
Jun 4, 1991
Charles A. Walton
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Portable warmer
Patent number
4,980,539
Issue date
Dec 25, 1990
Charles A. Walton
A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
Information
Patent Grant
Electronic proximity identification system
Patent number
4,918,416
Issue date
Apr 17, 1990
Sielox Systems, Inc.
Charles A. Walton
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Proximity identification system with lateral flux magnetic rod coup...
Patent number
4,888,474
Issue date
Dec 19, 1989
Charles A. Walton
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Proximity identification system with lateral flux paths
Patent number
4,782,342
Issue date
Nov 1, 1988
Charles A. Walton
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Proximity identification system with power aided identifier
Patent number
4,656,472
Issue date
Apr 7, 1987
Charles A. Walton
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Identification system with vector phase angle detection
Patent number
4,654,658
Issue date
Mar 31, 1987
Charles A. Walton
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Electronic proximity identification and recognition system with iso...
Patent number
4,600,829
Issue date
Jul 15, 1986
Charles A. Walton
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Electronic proximity identification system with simplified low powe...
Patent number
4,580,041
Issue date
Apr 1, 1986
Charles A. Walton
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Electronic proximity identification system
Patent number
4,546,241
Issue date
Oct 8, 1985
Charles A. Walton
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Electronic identification system with power input-output interlock...
Patent number
4,473,825
Issue date
Sep 25, 1984
Charles A. Walton
G07 - CHECKING-DEVICES
Information
Patent Grant
Identification system with separation and direction capability and...
Patent number
4,459,474
Issue date
Jul 10, 1984
Charles A. Walton
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Electronic identification and recognition system with code changeab...
Patent number
4,388,524
Issue date
Jun 14, 1983
Charles A. Walton
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Portable radio frequency emitting identifier
Patent number
4,384,288
Issue date
May 17, 1983
Charles A. Walton
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Portable device for measuring heartbeat rate with compensation for...
Patent number
4,307,728
Issue date
Dec 29, 1981
Charles A. Walton
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Personal identification and signaling system
Patent number
4,236,068
Issue date
Nov 25, 1980
Charles A. Walton
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Identification system
Patent number
4,223,830
Issue date
Sep 23, 1980
Charles A. Walton
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Device for measuring pulse, breathing and running rate for joggers
Patent number
4,202,350
Issue date
May 13, 1980
Charles A. Walton
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Recognition and identification key having adaptable resonant freque...
Patent number
4,142,674
Issue date
Mar 6, 1979
Schlage Electronics, Inc.
Charles A. Walton
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Electronic recognition and identification system for identifying a...
Patent number
3,970,824
Issue date
Jul 20, 1976
Schlage Electronics, Inc.
Charles A. Walton
G06 - COMPUTING CALCULATING COUNTING
Patents Applications
last 30 patents
Information
Patent Application
Ball for racquetball with training markings
Publication number
20070093323
Publication date
Apr 26, 2007
Charles A. Walton
A63 - SPORTS GAMES AMUSEMENTS
Information
Patent Application
Back treatment with slant table and user adjustments
Publication number
20070093367
Publication date
Apr 26, 2007
Charles A. Walton
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Application
Surface cleaner with multiple angled orifices
Publication number
20070017558
Publication date
Jan 25, 2007
Charles A. Walton
A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information
Patent Application
RFID with field changeable identification
Publication number
20060152364
Publication date
Jul 13, 2006
Charles A. Walton
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Finding underground animals using transducer probes
Publication number
20050219951
Publication date
Oct 6, 2005
Charles A. Walton
A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information
Patent Application
Underwater cleaning apparatus using suction grip
Publication number
20040194237
Publication date
Oct 7, 2004
Charles A. Walton
E04 - BUILDING
Information
Patent Application
Underwater cleaning and scrubbing apparatus
Publication number
20040133999
Publication date
Jul 15, 2004
Charles A. Walton
B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
Information
Patent Application
Proximity card with incorporated PIN code protection
Publication number
20020148895
Publication date
Oct 17, 2002
Kenneth B. Cecil
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
System for cleaning underwater surfaces, improvements and variations
Publication number
20020073493
Publication date
Jun 20, 2002
Charles A. Walton
E04 - BUILDING