US2844465A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic process
Assignee: Individual
•
Filing: 1954-03-17
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Granted: 1958-07-22
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Expires: 1974-03-17
Abstract
No abstract record available.
Inventors
- 👤 Chalkley Lyman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:28
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/72; G03C1/73; G03C1/732
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A PHOTOGRAPHIC PROCESS COMPRISING THE STEPS OF PRINTING OUT AN IMAGE BY ULTRAVIOLET RADIATION UPON MATERIAL SENSITIZED WITH A HYDROPHOBIC AMINO TRIPHENYLMETHANE DYE CYANIDE ACTIVATED BY AN ORGANIC ACTIVATOR BOILING BELOW 325*C. AT A PRESSURE 760 MM. OF MERCURY SELECTED FROM THE GROUP CONSISTING OF VERATROLE, RESORCINOL DIMETHYL ETHER, AN ETHYLENE GLYCOL ETHER, A PHOSPHORIC ACID ESTER OF A MONOHYDROXY COMPOUND, AND AROMATIC AMINE CONTAINING A HYDROGEN ATOM ON THE NITROGEN ATOM, A NITRILE IN WHICH THE CYANO GROUP IS ATTACHED TO A CARBON ATOM WHICH ALSO HOLDS A HYDROGEN ATOM, AN AROMATIC CARBINOL AND A LOWER ALIPHATIC ALCOHOL AND FIXING THE IMAGE BY BLOWING A STREAM OF AIR OVER THE PRINT UNTIL THE ACTIVATOR IS COMPLETELY REMOVED.
Claim 2
Dependent Claim
118 words
A PHOTOGRAPHIC PROCESS COMPRISING THE STEPS OF PRINTING OUT AN IMAGE BY ULTRAVIOLET RADIATION UPON MATERIAL SENSITIZED WITH A HYDROPHOBIC AMINO TRIPHENYLMETHANE DYE CYANIDE ACTIVATED BY AN ORGANIC ACTIVATOR BOILING BELOW 325*C. AT A PRESSURE 760 MM. OF MERCURY SELECTED FROM THE GROUP CONSISTING OF VERATROLE, RESORCINOL DIMETHYL ETHER, AN ETHYLENE GLYCOL ETHER, A PHOSPHORIC ACID ESTER OF A MONOHYDROXY COMPOUND, AND AROMATIC AMINE CONTAINING A HYDROGEN ATOM ON THE NITROGEN ATOM, A NITRILE IN WHICH THE CYANO GROUP IS ATTACHED TO A CARBON ATOM WHICH ALSO HOLDS A HYDROGEN ATOM, AN AROMATIC CARBINOL AND A LOWER ALIPHATIC ALCOHOL AND FIXING THE IMAGE BY BLOWING A STREAM OF AIR OVER THE PRINT UNTIL THE ACTIVATOR IS COMPLETELY REMOVED.
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) | 1961-07-21 | 1962-01-20 | 1962-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-21 | 1966-01-20 | 1966-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-21 | 1970-01-20 | 1970-07-22 | $7700.00 | Window Closed / Lapsed |