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Display Science, Inc.
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North Adams, MA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Passively illuminated, eye-catching display for traffic signs
Patent number
6,897,786
Issue date
May 24, 2005
Display Science, Inc.
Charles G. Kalt
G08 - SIGNALLING
Information
Patent Grant
Variable configuration video displays and their manufacture
Patent number
6,771,237
Issue date
Aug 3, 2004
Display Science, Inc.
Charles G. Kalt
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information
Patent Grant
Method of manufacturing a light modulating capacitor array and product
Patent number
6,692,646
Issue date
Feb 17, 2004
Display Science, Inc.
Charles G Kalt
G02 - OPTICS
Information
Patent Grant
Electrostatic video display drive circuitry and displays incorporat...
Patent number
6,317,108
Issue date
Nov 13, 2001
Display Science, Inc.
Charles G. Kalt
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information
Patent Grant
Electrostatic video display drive circuitry and displays incorporat...
Patent number
6,057,814
Issue date
May 2, 2000
Display Science, Inc.
Charles G. Kalt
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information
Patent Grant
Electrostatic device and terminal therefor
Patent number
4,747,670
Issue date
May 31, 1988
Display Science, Inc.
John L. Devio
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS