US3079270A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Auto copy paper and methods of making the same
Assignee: Lamford Paper International Ltd
•
Filing: 1959-03-06
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Granted: 1963-02-26
•
Expires: 1979-03-06
Abstract
No abstract record available.
Inventors
- 👤 Jose C Cortez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 02:44
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24934; Y10T428/31504
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
AN AUTO-COPY SHEET COMPRISING A BACKING SHEET, A CONTINUOUS OPAQUE COATING OF PIGMENT PARTICLES AND A BINDER CONTAINING A WATER-INSOLUBLE, CHEMICALLY INERT, NONIONIC SURFACE ACTIVE AGENT ON ONE SURFACE OF SAID SHEET, SAID COATING BEING FIRM, DRY AND NON-TACKY AND OF A CHARACTER SUCH THAT THE IMPACT OF A TYPEWRITER KEY UNDER NORMAL OPERATIONS DESTROYS THE OPACITY OF THE COATING IN THE IMPACTED AREA AND REVEALS THE SURFACE OF THE UNDERLYING SHEET IN SUCH AREA.
Claim 2
Dependent Claim
75 words
AN AUTO-COPY SHEET COMPRISING A BACKING SHEET, A CONTINUOUS OPAQUE COATING OF PIGMENT PARTICLES AND A BINDER CONTAINING A WATER-INSOLUBLE, CHEMICALLY INERT, NONIONIC SURFACE ACTIVE AGENT ON ONE SURFACE OF SAID SHEET, SAID COATING BEING FIRM, DRY AND NON-TACKY AND OF A CHARACTER SUCH THAT THE IMPACT OF A TYPEWRITER KEY UNDER NORMAL OPERATIONS DESTROYS THE OPACITY OF THE COATING IN THE IMPACTED AREA AND REVEALS THE SURFACE OF THE UNDERLYING SHEET IN SUCH AREA.
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) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |