US3341472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoconductors and method of making the same
Assignee: International Business Machines Corp
•
Filing: 1963-08-26
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Granted: 1967-09-12
•
Expires: 1983-08-26
Abstract
No abstract record available.
Inventors
- 👤 William A Hewett
- 👤 Alfred H Sporer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:20
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/07; C; C07; C07D; C07D209/00; C07D209/56; C07D209/80; C07D209/82; C07D209/86; C08; C08F; C08F26/00; C08F26/06; C08F26/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
15 words
AN ORGANIC POLYMERIC PHOTOCONDUCTOR WHICH CONSISTS ESSENTIALLY OF: A POLYMER WHICH HAS THE STRUCTURAL FORMULA:
Claim 2
Dependent Claim
15 words
AN ORGANIC POLYMERIC PHOTOCONDUCTOR WHICH CONSISTS ESSENTIALLY OF: A POLYMER WHICH HAS THE STRUCTURAL FORMULA:
Claim 3
Independent Claim
23 words
THE METHOD OF MAKING AN ORGANIC PHOTOCONDUCTOR, WHICH METHOD COMPRISES: COMPLEXING AROMATIC UNITS OF POLYMERIC MATERIAL CONTAINING MONOMERIC UNITS HAVING THE STRUCTURAL FORMULA:
Claim 4
Independent Claim
23 words
THE METHOD OF MAKING AN ORGANIC PHOTOCONDUCTOR, WHICH METHOD COMPRISES: COMPLEXING AROMATIC UNITS OF POLYMERIC MATERIAL CONTAINING MONOMERIC UNITS HAVING THE STRUCTURAL FORMULA:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |