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CHAPMAN CORPORATION
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PORTLAND, ME, US
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Patents Grants
last 30 patents
Information
Patent Grant
Performance indicator for an electrical static eliminator device
Patent number
6,075,449
Issue date
Jun 13, 2000
Chapman Corporation
Chandler G. Sinnett
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Surface cleaner and collector system
Patent number
5,836,044
Issue date
Nov 17, 1998
Chapman Corporation
Chandler G. Sinnett
B08 - CLEANING
Information
Patent Grant
Self-balancing circuit for convection air ionizers
Patent number
5,008,594
Issue date
Apr 16, 1991
Chapman Corporation
Ralph W. Swanson
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Patents Applications
last 30 patents
Trademark
last 30 trademarks
Information
Trademark
73735614 - PASSIVATOR
Serial number
73735614
Registration number
1526640
Filing date
Jun 16, 1988
CHAPMAN CORPORATION
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments