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Inventor

John Wallace Macpherson

Inventor
Snohomish, WA, US

Overview

5→
Patents
1991–2010
Patent span
Chemistry
Primary field (CPC C)

Patents· 5 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

C02Fprimary
C02FTreatment of water, waste water, sewage, or sludge50%
A21DTreatment of flour or dough for baking, e.g. by addition of materials13%
A23GCocoa13%
B01DSeparation13%
E03FSewers13%
PatentTitleYear
7,749,391'Coagulant-enhanced pre-filtration system'20106,821,427'Methods for reducing the amount of contaminants in water'20046,749,748'Methods for reducing the amount of contaminants in water'20045,223,154'System for filtering liquids in a catch basin using filters in series and overflow channels'19935,017,394'Method for making edible base shapes having pictorial images for decorating foodstuffs'1991

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991Patents assigned to LUCKS CO (1)· patent assignee history
1991Based in Gig Harbor, WA, US· patent location history
1993Patents assigned to EMCON NORTHWEST INC (1)· patent assignee history
1993–2004Based in Snohomish, WA, US· patent location history
2004Patents assigned to VANSON HALOSOURCE INC (2)· patent assignee history
2010Patents assigned to NATURAL SITE SOLUTIONS LLC (1)· patent assignee history
2010Based in Cedar Crest, NM, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
VANSON HALOSOURCE INC22004
EMCON NORTHWEST INC11993
LUCKS CO11991
NATURAL SITE SOLUTIONS LLC12010
Locations
LocationPatentsSpan
Snohomish, Washington, US31993–2004
Cedar Crest, NM, US12010
Gig Harbor, Washington, US11991