Growing community of inventors

Milford, CT, United States of America

John C Hamma

Average Co-Inventor Count = 1.91

ph-index = 11

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 400

John C HammaR Clark DuBois (13 patents)John C HammaJohn R Nobile (2 patents)John C HammaDavid W Hubbard (2 patents)John C HammaDonald E Barker (2 patents)John C HammaRonald P Sansone (1 patent)John C HammaAnthony Storace (1 patent)John C HammaKevin D Hunter (1 patent)John C HammaKenneth L Guenther (1 patent)John C HammaJeffrey D Pierce (1 patent)John C HammaSteven M Kaye (1 patent)John C HammaMichael A Wisniewski (1 patent)John C HammaFran E Blackman (1 patent)John C HammaMichael D O'Hare (1 patent)John C HammaGeorge Rabindran (1 patent)John C HammaJohn T Balga, Jr (1 patent)John C HammaMartyn R House (1 patent)John C HammaBruce A Brown (1 patent)John C HammaScott Korowotny (1 patent)John C HammaJay L Carley (1 patent)John C HammaWendy F Jai (1 patent)John C HammaJohn O'Callaghan (1 patent)John C HammaStanley Popiel (1 patent)John C HammaR Clark Du Bois (1 patent)John C HammaJohn C Hamma (24 patents)R Clark DuBoisR Clark DuBois (33 patents)John R NobileJohn R Nobile (60 patents)David W HubbardDavid W Hubbard (40 patents)Donald E BarkerDonald E Barker (30 patents)Ronald P SansoneRonald P Sansone (142 patents)Anthony StoraceAnthony Storace (34 patents)Kevin D HunterKevin D Hunter (32 patents)Kenneth L GuentherKenneth L Guenther (26 patents)Jeffrey D PierceJeffrey D Pierce (26 patents)Steven M KayeSteven M Kaye (13 patents)Michael A WisniewskiMichael A Wisniewski (9 patents)Fran E BlackmanFran E Blackman (6 patents)Michael D O'HareMichael D O'Hare (6 patents)George RabindranGeorge Rabindran (5 patents)John T Balga, JrJohn T Balga, Jr (4 patents)Martyn R HouseMartyn R House (4 patents)Bruce A BrownBruce A Brown (3 patents)Scott KorowotnyScott Korowotny (3 patents)Jay L CarleyJay L Carley (2 patents)Wendy F JaiWendy F Jai (1 patent)John O'CallaghanJohn O'Callaghan (1 patent)Stanley PopielStanley Popiel (1 patent)R Clark Du BoisR Clark Du Bois (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Gradco-dendoki, Inc. (12 from 19 patents)

2. Other (4 from 832,843 patents)

3. Pitney Bowes Inc. (2 from 2,979 patents)

4. Bell + Howell Company (1 from 502 patents)

5. Gradco Systems, Inc. (1 from 10 patents)

6. Truman Products (1 from 2 patents)

7. Princeton Products Inc. (1 from 2 patents)

8. Scan-code, Inc. (1 from 1 patent)

9. Mystic Color Lab, Inc. (1 from 1 patent)


24 patents:

1. 5675959 - Opening fingers for envelope inserting apparatus

2. 5615995 - Mail piece stacking machine

3. 5577278 - Portable, integrated, universally adjustable position control system

4. 5508818 - Mixed mail transport

5. 5507380 - Stacked package separating system

6. 5503388 - Buffered stacker

7. 5457636 - Postal finishing kiosk

8. 5438874 - Pressure measuring instruments

9. 5311625 - Portable, integrated, universally adjustable position control system

10. 5248960 - Signal generating/position controlling system

11. 4466608 - Movable tray sheet sorter

12. D271882 - Universal sorter

13. D271775 - Copying and sorting apparatus

14. D270253 - Combined copying and sorting machine

15. 4397461 - Sorting machine

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idiyas.com
as of
12/28/2025
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