Patent US3172827A successfully refreshed from Google Patents.
US3172827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Permanent reproductions
Assignee: —
•
Filing: —
•
Granted: 1965-03-09
•
Expires: 1982-03-09
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:49
CPC Classifications
C; C09; C09B; C09B1/00; C09B1/16; C09B1/20; C09B1/36; C09B1/42; C09B11/00; C09B11/04; C09B29/00; C09B29/0003; C09B29/34; C09B29/36; C09B29/3604; C09B29/3647; C09B29/3652; C09B29/366; C09B43/00; C09B47/00; C09B47/04; C09B47/08; C09B47/12; C09B47/16; C09B47/24; C09B47/26; C09B48/00; C09B5/00; C09B5/02; C09B5/14; C09B5/24; C09B5/32; C09B69/00; C09B7/00; C09B7/10; G; G03; G03G; G03G13/00; G03G13/01; G03G17/00; G03G17/02; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/087; G03G5/09; G03G5/12; Y; Y10; Y10S; Y10S534/00; Y10S534/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A METHOD FOR SELECTIVELY DEPOSITING A BASIC NITROGEN-CONTAINING ORGANIC COMPOUND WHICH IS WATER SOLUBLE IN THE PRESENCE OF AN ACID AND SUBSTANTIALLY INSOLUBLE IN WATER AT A PH ABOVE 7 ON THE SURFACE OF THE PHOTOCONDUCTOR BONDED TO AN ELECTRICALLY CONDUCTIVE CARRIER WHICH COMPRISES EXPOSING SAID PHOTOCONDUCTOR TO A LIGHT SOURCE IN THE SELECTED AREAS THEREBY RENDERING THE EXPOSED AREAS ELECTRICALLY CONDUCTIVE, CONTACTING THE EXPOSED AREAS WITH AN ACID SOLUTION OF SAID BASIC NITROGEN-CONTAINING ORGANIC COMPOUND HAVING A SUBSTITUENT GROUP OF TE GENERAL STRUCTURAL FORMULA
Claim 2
Independent Claim
85 words
A METHOD FOR SELECTIVELY DEPOSITING A BASIC NITROGEN-CONTAINING ORGANIC COMPOUND WHICH IS WATER SOLUBLE IN THE PRESENCE OF AN ACID AND SUBSTANTIALLY INSOLUBLE IN WATER AT A PH ABOVE 7 ON THE SURFACE OF THE PHOTOCONDUCTOR BONDED TO AN ELECTRICALLY CONDUCTIVE CARRIER WHICH COMPRISES EXPOSING SAID PHOTOCONDUCTOR TO A LIGHT SOURCE IN THE SELECTED AREAS THEREBY RENDERING THE EXPOSED AREAS ELECTRICALLY CONDUCTIVE, CONTACTING THE EXPOSED AREAS WITH AN ACID SOLUTION OF SAID BASIC NITROGEN-CONTAINING ORGANIC COMPOUND HAVING A SUBSTITUENT GROUP OF TE GENERAL STRUCTURAL FORMULA
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-08 | 1968-09-07 | 1969-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-08 | 1972-09-07 | 1973-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-08 | 1976-09-07 | 1977-03-09 | $7700.00 | Window Closed / Lapsed |