For the Inventor, By the Inventor

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Cambridge, Canada

3L Filters Ltd.

USPTO Granted Patents = 3

CIPO Patents = 2

Forward Citations = 111

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4 inventors (with patents filed for the assignee):

William M Maser (2 out of 2 patents)

Frank E Heywood (2 out of 2 patents)

George T Foss (2 out of 2 patents)

4. Gennady Krylov (1 out of 1 patent)

3 patents: Sort by Forward Citations

1. 6658889 - Apparatus for producing potable water and slush from sea water or brine (2003-12-09),

2. 6401958 - Lid closure system (2002-06-11),

3. 6378249 - Lid lifting mechanism (2002-04-30),

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USPTO Data Jan 1 1976 - Sep 29 2026

3 Patents

#30 in Cambridge

#4,365 in Canada

Cambridge, Canada

3L Filters Ltd.

Forward Citations = 111

4 inventors:

William M Maser (2 out of 2 patents)

Frank E Heywood (2 out of 2 patents)

George T Foss (2 out of 2 patents)

4. Gennady Krylov (1 out of 1 patent)

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