Inventor · disambiguated record
Chris J. Christopher
Also filed as: CHRISTOPHER CHRIS J · JUDD M
8 granted patents·127 citations·filing 1974–1982
87Inventor score
Technology areasG06F
Files withHEWLETT PACKARD CO8
Top patents by PatentIndex Score
8 records- 0178US4075679AProgrammable calculatorHEWLETT PACKARD CO·Filed 1975·Granted Feb 21, 1978·43 cites·8 claims
- 0273US4012725AProgrammable calculatorHEWLETT PACKARD CO·Filed 1974·Granted Mar 15, 1977·35 cites·41 claims
- 0347US4126898AProgrammable calculator including terminal control meansHEWLETT PACKARD CO·Filed 1977·Granted Nov 21, 1978·13 cites·11 claims
- 0446US4437156AProgrammable calculatorHEWLETT PACKARD CO·Filed 1981·Granted Mar 13, 1984·16 cites·4 claims
- 0536US4322816AProgrammable calculator having structure for controlling an x-y plotterHEWLETT PACKARD CO·Filed 1980·Granted Mar 30, 1982·9 cites·8 claims
- 0634US4366553AElectronic computing apparatus employing basic languageHEWLETT PACKARD CO·Filed 1980·Granted Dec 28, 1982·7 cites·9 claims
- 0731US4127897AProgrammable calculator having extended input/output capabilityHEWLETT PACKARD CO·Filed 1977·Granted Nov 28, 1978·4 cites·5 claims
- 0827US4546448AProgrammable calculator including program variable initialization means and definition means arrayHEWLETT PACKARD CO·Filed 1982·Granted Oct 8, 1985·0 cites·3 claims
Join the waitlist — get patent alerts
Get an alert when Chris J. Christopher files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →