US3899334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoimaging procedures and compositions
Assignee: Monsanto Co
•
Filing: 1973-10-11
•
Granted: 1975-08-12
•
Expires: 1993-10-11
Abstract
Abstract This invention concerns a photoimaging procedure in which the image is characterized by a differential concentration of sulfate groups, depending upon the degree of light exposure, and is developable by selective absorption of dyes and other procedures. The sulfate groups can be obtained by SO2 treatment of hydroperoxy groups produced in a photooxidation imaging procedure.
Inventors
- 👤 Floyd B Erickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:45
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/72; G03C1/73; G03C1/733
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
29 words
THE METHOD OF TREATING AN IMAGE COMPRISED OF HYDROPEROXY GROUPS ATTACHED TO A POLYMERIC SUBSTATE COMPRISING A POLYMER WITH A HYDROCARBON BACKBONE WHICH COMPRISES CONTACTING SAME WITH SULFUR DIOXIDE.
Claim 2
Independent Claim
29 words
THE METHOD OF TREATING AN IMAGE COMPRISED OF HYDROPEROXY GROUPS ATTACHED TO A POLYMERIC SUBSTATE COMPRISING A POLYMER WITH A HYDROCARBON BACKBONE WHICH COMPRISES CONTACTING SAME WITH SULFUR DIOXIDE.
Claim 3
Independent Claim
28 words
The method of treating an image comprised of hydroperoxy groups attached to a polymeric substrate comprising a polymer with a hydrocarbon backbone which comprises contacting same with sulfolene.
Claim 4
Independent Claim
28 words
The method of treating an image comprised of hydroperoxy groups attached to a polymeric substrate comprising a polymer with a hydrocarbon backbone which comprises contacting same with sulfolene.
Claim 5
Independent Claim
41 words
The method of obtaining a visible image which comprises adding a coloring material to a polymeric substrate comprising a polymer having a hydrocarbon backbone containing an image in the form of a differential distribution of sulfate groups attached to said substrate.
Claim 6
Independent Claim
41 words
The method of obtaining a visible image which comprises adding a coloring material to a polymeric substrate comprising a polymer having a hydrocarbon backbone containing an image in the form of a differential distribution of sulfate groups attached to said substrate.
Claim 7
Dependent Claim
18 words
The method of claim 3 in which a dye is added to selectively color areas containing sulfate groups.
Claim 8
Dependent Claim
16 words
The method of claim 4 in which a polar dye is added in an alcoholic solvent.
Claim 9
Dependent Claim
22 words
The method of claim 3 in which a dye in non-polar solvent is used to selectively color areas not containing sulfate groups.
Claim 10
Independent Claim
49 words
The method of obtaining a visible image which comprises treating a polymer having aliphatic carbon-to-carbon unsaturation containing an image in the form of a differential distribution of sulfate groups with a liquid to selectively remove portions of said polymer based on such differential distribution to form a visible image.
Claim 11
Independent Claim
49 words
The method of obtaining a visible image which comprises treating a polymer having aliphatic carbon-to-carbon unsaturation containing an image in the form of a differential distribution of sulfate groups with a liquid to selectively remove portions of said polymer based on such differential distribution to form a visible image.
Claim 12
Dependent Claim
19 words
The method of claim 7 in which a liquid is employed to selectively remove areas not having sulfate groups.
Claim 13
Dependent Claim
15 words
The method of claim 8 in which an aliphatic hydrocarbon is employed for selective removal.
Claim 14
Dependent Claim
18 words
The method of claim 8 in which the developed image is transferred from one support to another support.
Claim 15
Dependent Claim
15 words
The method of claim 3 in which the substrate comprises a polymer of a diolefin.
References Cited (Backward Citations)
US2437412A
Cited
US3097096A
Cited
US2950237A
Cited
US2951799A
Cited
US2951798A
Cited
US2951800A
Cited
US3790389A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-11 | 1979-02-10 | 1979-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-11 | 1983-02-10 | 1983-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-11 | 1987-02-10 | 1987-08-12 | $7700.00 | Window Closed / Lapsed |