DM

Douglas R. McPherson

AS Astenjohnson: 4 patents #11 of 70Top 20%
JW Jwi: 3 patents #7 of 59Top 15%
PA Paperchine: 2 patents #2 of 13Top 20%
📍 Town of East Granby, CT: #8 of 74 inventorsTop 15%
🗺 Connecticut: #4,119 of 34,797 inventorsTop 15%
Overall (All Time): #460,984 of 4,157,543Top 15%
11
Patents All Time

Issued Patents All Time

Showing 1–11 of 11 patents

Patent #TitleCo-InventorsDate
9708766 Cover device for a drainage apparatus for a papermaking machine 2017-07-18
9404588 Vacuum control valve for vacuum drainage system George C. Mendrala, James Ronning, Jay Shands 2016-08-02
8097122 Papermaking machine dewatering blade incorporating attachment mechanism 2012-01-17
7918969 Composite construction for dewatering blades for a papermaking machine 2011-04-05
7578906 Headbox and stock delivery system for a papermaking machine Jay Shands, James Ronning, George C. Mendrala, Vaughn Wildfong 2009-08-25
7540943 Shaped slot vacuum dewatering box cover 2009-06-02
6361657 Twin fabric forming section blade mounting 2002-03-26
6126786 Apparatus and method of generating stock turbulence in a fourdrinier forming section James D. White, Richard Pitt 2000-10-03
5630910 Clip fastener for a dewatering box 1997-05-20
5080760 Pressurized forming board David Smith, Richard Pitt 1992-01-14
5011577 Pressure control forming section Victor E. Hansen, David Smith, Richard Pitt 1991-04-30