Patent US3102812A successfully refreshed from Google Patents.
US3102812A
Expired / Lapsed
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Stabilizers for one-component diazotype materials
Assignee: GAF Chemicals Corp
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Filing: 1960-11-16
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Granted: 1963-09-03
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Expires: 1980-11-16
Abstract
No abstract record available.
Inventors
- 👤 Walter J Welch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:27
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; G03C1/61
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
ONE-COMPONENT, LIGHT-SENSITIVE DIAZOTYPE MATERIALS COMPRISING A BASE HAVING IMBIDED THERETO A LIGHT-SENSITIVE DIAZONIUM COMPOUND AND AS A STABILIZER, A COMPOUND SELECTED FROM THE CLASS CONSISTING OF THE MONO- AND DISULFONIC ACIDS OF NAPHTHALENE AND THEIR ALKALI METAL SALTS.
Claim 2
Dependent Claim
38 words
ONE-COMPONENT, LIGHT-SENSITIVE DIAZOTYPE MATERIALS COMPRISING A BASE HAVING IMBIDED THERETO A LIGHT-SENSITIVE DIAZONIUM COMPOUND AND AS A STABILIZER, A COMPOUND SELECTED FROM THE CLASS CONSISTING OF THE MONO- AND DISULFONIC ACIDS OF NAPHTHALENE AND THEIR ALKALI METAL SALTS.
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) | 1966-09-02 | 1967-03-04 | 1967-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-02 | 1971-03-04 | 1971-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-02 | 1975-03-04 | 1975-09-03 | $7700.00 | Window Closed / Lapsed |