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Inventor

Douglas R. McPherson

Inventor
East Granby, CT, US

Overview

11→
Patents
1991–2017
Patent span
Textiles
Primary field (CPC D)

Patents· 11 as inventor

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

D21Fprimary
D21FPaper-making machines77%
D21GCalenders8%
F16KValves8%
Y10TTechnical subjects covered by former us classification8%
PatentTitleYear
9,708,766'Cover device for a drainage apparatus for a papermaking machine'20179,404,588'Vacuum control valve for vacuum drainage system'20168,097,122'Papermaking machine dewatering blade incorporating attachment mechanism'20127,918,969'Composite construction for dewatering blades for a papermaking machine'20117,578,906'Headbox and stock delivery system for a papermaking machine'20097,540,943'Shaped slot vacuum dewatering box cover'20096,361,657'Twin fabric forming section blade mounting'20026,126,786'Apparatus and method of generating stock turbulence in a fourdrinier forming section'20005,630,910'Clip fastener for a dewatering box'19975,080,760'Pressurized forming board'19925,011,577'Pressure control forming section'1991

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991–1997Patents assigned to JWI LTD (3)· patent assignee history
1991Based in East Longmeadow, MA, US· patent location history
1992–1997Based in Windsor, CT, US· patent location history
2000–2016Based in East Granby, CT, US· patent location history
2009–2012Patents assigned to ASTENJOHNSON INC (4)· patent assignee history
2012–2016Patents assigned to MCPHERSON DOUGLAS R (2)· patent assignee history
2016–2017Patents assigned to PAPERCHINE INC (2)· patent assignee history
2016Patents assigned to MENDRALA GEORGE C (1)· patent assignee history
2017Based in Springfield, MA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
ASTENJOHNSON INC42009–2012
JWI LTD31991–1997
MCPHERSON DOUGLAS Rself22012–2016
PAPERCHINE INC22016–2017
MENDRALA GEORGE C12016
Locations
LocationPatentsSpan
East Granby, CT, US72000–2016
Windsor, CT, US21992–1997
Springfield, Massachusetts, US12017
East Longmeadow, Massachusetts, US11991