US3111584A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copy-sheet and method for producing copies of graphic originals in the form of positive projection transparencies
Assignee: 3M Co
•
Filing: 1960-05-25
•
Granted: 1963-11-19
•
Expires: 1980-05-25
Abstract
No abstract record available.
Inventors
- 👤 Roger H Appeldorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:17
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/02; G03B27/14; G03B27/30; G03B27/306; B; B41; B41M; B41M5/00; B41M5/26; B41M5/36; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24471; Y10T428/26; Y10T428/263; Y10T428/264
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
METHOD OF MAKING A POSITIVE PROJECTION TRANSPARENCY COMPRISING ESTABLISHING A MICROSCOPIC PATTERN OF DIFFERENTIAL COHESION AT THE SURFACE OF A CLEAR THIN HEATCONTRACTILE PLASTIC FILM BY APPLYING PENETRANT TO SAID SURFACE, AND LOCALLY HEATING SAID FILM AT IMAGE AREAS TO AN EXTENT SUFFICIENT TO PERMIT LOCALIZED MICROSCOPIC CONTRACTION AND ROUGHENING OF SAID FILM AT SAID SURFACE.
Claim 2
Dependent Claim
56 words
METHOD OF MAKING A POSITIVE PROJECTION TRANSPARENCY COMPRISING ESTABLISHING A MICROSCOPIC PATTERN OF DIFFERENTIAL COHESION AT THE SURFACE OF A CLEAR THIN HEATCONTRACTILE PLASTIC FILM BY APPLYING PENETRANT TO SAID SURFACE, AND LOCALLY HEATING SAID FILM AT IMAGE AREAS TO AN EXTENT SUFFICIENT TO PERMIT LOCALIZED MICROSCOPIC CONTRACTION AND ROUGHENING OF SAID FILM AT SAID SURFACE.
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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) | 1966-11-18 | 1967-05-20 | 1967-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-18 | 1971-05-20 | 1971-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-18 | 1975-05-20 | 1975-11-19 | $7700.00 | Window Closed / Lapsed |