US3303028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Formation of diazo couplers in situ
Assignee: International Business Machines Corp
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Filing: 1963-11-20
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Granted: 1967-02-07
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Expires: 1983-11-20
Abstract
No abstract record available.
Inventors
- 👤 Claude M Aebi
- 👤 Leon A Teuscher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:10
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; G03C1/58; G03C1/585; F; F24; F24F; F24F6/00; F24F6/02; F24F6/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
59 words
A LIGHT-SENSITIVE, THERMO-DEVELOPABLE DIAZONIUM COMPOSITION CONSISTING ESSENTIALLY OF A LIGHT-SENSITIVE DIAZONMIUM COMPOUND; A LATENT COUPLING COMPOUND, SAID LATENT COUPLING COMPOUND BEING DEHYDRATED WHEN HEATED TO FORM AN ACTIVE COUPLING COMPONENT CONTAINING AN ACTIVE METHYLENE GROUP SELECTED FROM THE GROUP CONSISTING OF 5-HYDROXY 5-PHENYL 2-PENTANONE,$,$''-DIPHENYL $-HYDROXY BUTYROPHENONE, 3-BENZYL 2,4-DIPHENYL 3-HYDROXY BUTANOIC ACID, $-PHENYL $-HYDROXY BUTRAMIDE AND A,$DIPHENYL B-HYDROXY BUTYRIC ACID.
Claim 2
Dependent Claim
59 words
A LIGHT-SENSITIVE, THERMO-DEVELOPABLE DIAZONIUM COMPOSITION CONSISTING ESSENTIALLY OF A LIGHT-SENSITIVE DIAZONMIUM COMPOUND; A LATENT COUPLING COMPOUND, SAID LATENT COUPLING COMPOUND BEING DEHYDRATED WHEN HEATED TO FORM AN ACTIVE COUPLING COMPONENT CONTAINING AN ACTIVE METHYLENE GROUP SELECTED FROM THE GROUP CONSISTING OF 5-HYDROXY 5-PHENYL 2-PENTANONE,$,$''-DIPHENYL $-HYDROXY BUTYROPHENONE, 3-BENZYL 2,4-DIPHENYL 3-HYDROXY BUTANOIC ACID, $-PHENYL $-HYDROXY BUTRAMIDE AND A,$DIPHENYL B-HYDROXY BUTYRIC ACID.
Claim 3
Dependent Claim
44 words
A LIGHT SENSITIVE THERMO-DEVELOPABLE DIAZONIUM COMPOSITON CONSISTING ESSENTIALLY OF A LIGHT-SENSITIVE DIAZONIUM COMPOSITION AND A LATENT COUPLING COMPOUND CAPABLE OF BEING DEHYDRATED WHEN HEATED TO FORM AN ACTIVE COUPLING COMPONENT CONTAINING AN ACTIVE METHYLENE GROUP, SAID LATENT COUPLING COMPOUND HAVING THE GENERAL FORMULA OF
Claim 4
Dependent Claim
44 words
A LIGHT SENSITIVE THERMO-DEVELOPABLE DIAZONIUM COMPOSITON CONSISTING ESSENTIALLY OF A LIGHT-SENSITIVE DIAZONIUM COMPOSITION AND A LATENT COUPLING COMPOUND CAPABLE OF BEING DEHYDRATED WHEN HEATED TO FORM AN ACTIVE COUPLING COMPONENT CONTAINING AN ACTIVE METHYLENE GROUP, SAID LATENT COUPLING COMPOUND HAVING THE GENERAL FORMULA OF
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) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |