RH

Richard R. Helinski

HO Howtek: 7 patents #2 of 27Top 8%
📍 Hudson, NH: #46 of 319 inventorsTop 15%
🗺 New Hampshire: #1,904 of 12,181 inventorsTop 20%
Overall (All Time): #669,857 of 4,157,543Top 20%
8
Patents All Time

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
5196236 Ink jet color printing method Robert C. Howard, Herbert E. Menhennett 1993-03-23
5136515 Method and means for constructing three-dimensional articles by particle deposition 1992-08-04
4870430 Solid ink delivery system Robert Daggett, Robert C. Howard, Mark W. Magee 1989-09-26
4741930 Ink jet color printing method Robert C. Howard, Herbert E. Menhennett 1988-05-03
4721635 Color printed record and method 1988-01-26
4714936 Ink jet printer Carl David Lutz, Thomas R. Peer, Philip A. Eno, Sr. 1987-12-22
4666757 Color printed record 1987-05-19
4591281 Sheet-feed mechanism for rotary print head Robert C. Howard, John Robert Larsen, Herbert E. Menhennett 1986-05-27