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JH

John C. Hamma — 27 Patents

GRGradco/Dendoki: 12 patents #1 of 4Top 25%
DIDresser Industries: 2 patents #219 of 787Top 30%
Pitney Bowes: 2 patents #716 of 1,313Top 55%
ASAccent Color Sciences: 1 patents #2 of 11Top 20%
BHBell And Howell: 1 patents #131 of 293Top 45%
GSGradco Systems: 1 patents #4 of 7Top 60%
Milford, CT: #16 of 527 inventorsTop 4%
Connecticut: #1,328 of 34,797 inventorsTop 4%
Overall (All Time): #142,059 of 4,157,543Top 4%
27 Patents All Time
John C. Hamma has been granted 27 US patents while listed as an inventor at Gradco/Dendoki. The first was granted in 1980 and the most recent in November 2003. John C. Hamma ranks #142,059 of 4,157,543 US inventors in our database (top 3.4%). Patent records list John C. Hamma in Milford, CT, US.

Issued Patents All Time

Showing 1–25 of 27 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
6651507 Pressure gauge having a dampener mechanism Walter J. Ferguson, Jeffrey T. Blake, Michael J. Maloney, Louis A. Rosen 2003-11-25
6119525 Pressure gauge having dampener mechanism — 2000-09-19
5793397 Printer assembly Don Barker, John J. Mercede, Jr., Mike Raymond, Norman L. Milliard 1998-08-11 $522,000
5675959 Opening fingers for envelope inserting apparatus Martyn R. House, David W. Hubbard, John R. Nobile 1997-10-14 $55,626,000
5615995 Mail piece stacking machine John R. Nobile 1997-04-01
5577278 Portable, integrated, universally adjustable position control system Donald Barker, Bruce A. Brown 1996-11-26
5507380 Stacked package separating system — 1996-04-16
5508818 Mixed mail transport — 1996-04-16
5503388 Buffered stacker Kenneth L. Guenther, John S. O'Callaghan, George Rabindran, Anthony Storace, Michael Wisniewski 1996-04-02 $2,048,000
5457636 Postal finishing kiosk Ronald P. Sansone, Michael D. O'Hare, Steven M. Kaye, John T. Balga, Jr., Fran E. Blackman +5 more 1995-10-10 $15,311,000
5438874 Pressure measuring instruments — 1995-08-08
5311625 Portable, integrated, universally adjustable position control system Donald Barker 1994-05-17
5248960 Signal generating/position controlling system — 1993-09-28
4466608 Movable tray sheet sorter R. Clark DuBois 1984-08-21 $167,000
D271882 Universal sorter R. Clark DuBois 1983-12-20
D271775 Copying and sorting apparatus R. Clark DuBois 1983-12-13
D270253 Combined copying and sorting machine R. Clark DuBois 1983-08-23
4397461 Sorting machine R. Clark DuBois 1983-08-09
D265564 Continuous form feeding and copying apparatus R. Clark DuBois 1982-07-27
4332377 Compact sorter R. Clark DuBois 1982-06-01
4328963 Compact sorter R. Clark DuBois 1982-05-11
D264220 Copying and sorting apparatus R. Clark DuBois 1982-05-04
D264092 Continuous form feeding and copying apparatus R. Clark DuBois 1982-04-27
D263850 Continuous form feeding and copying apparatus R. Clark DuBois 1982-04-13
D263848 Copying and sorting apparatus R. Clark DuBois 1982-04-13

Nearby-Ranked Inventors

Glen R. Fantuzzi27
Muhammad Masuduzzaman27
Liem Hieu Dinh Vo27
Yusuke Amano27
William David Stewart27
Delphine Longrie27
David C. Tully27
Minako Kawabe27
Marinus Hansort27