US3222216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for affixing ohmic contacts to photoconductor elements
Assignee: International Business Machines Corp
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Filing: 1962-06-04
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Granted: 1965-12-07
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Expires: 1982-06-04
Abstract
No abstract record available.
Inventors
- 👤 Berkenblit Melvin
- 👤 Cheroff George
- 👤 Hochberg Frederick
- 👤 Reisman Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:25
CPC Classifications
H; H10; H10F; H10F77/00; H10F77/20; H10F71/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
41 words
A PROCESS FOR ELECTRICALLY INTEGRATING ELECTRODES TO PHOTOCONDUCTOR ELEMENTS WHICH COMPRISES TREATING THE PHOTOCONDUCTOR ELEMENT WITH NITRIC ACID; AFFIXING ELECTRODES TO THE TREATED PHOTOCONDUCTOR ELEMENT BY A SCREENING PROCESS TO PRODUCE THEREBY PHOTOCONDUCTOR ELEMENTS HAVING ELECTRODES WHICH ARE OHMIC IN NATURE.
References Cited (Backward Citations)
CA563340A
Cited
CA573246A
Cited
CA620009A
Cited
GB556718A
Cited
US2784121A
Cited
US2879182A
Cited
US2880119A
Cited
US2999240A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |