Patent US2870040A successfully refreshed from Google Patents.
US2870040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated manifolding sheets and method of making them
Assignee: Individual
•
Filing: 1957-08-06
•
Granted: 1959-01-20
•
Expires: 1977-08-06
Abstract
No abstract record available.
Inventors
- 👤 Jr Edwin R Gill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:56
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; B41M5/132; Y; Y10; Y10S; Y10S101/00; Y10S101/29
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
IN A TRANSFER COPYING SYSTEM, AN ORIGINAL SHEET PROVIDED WITH A UNIFORM COATING OF AN ACIDIFIED SOLUTION OF AN ALKALI METAL GALLATE DRIED THEREON AND A COPY SHEET PROVIDED WITH A GELATINOUS COATING OF AN IRON LACTATE SALT, SAID SHEETS BEING ARRANGED WITH THE COATED SURFACES IN CONTIGUOUS RELATIONSHIP.
Claim 2
Dependent Claim
49 words
IN A TRANSFER COPYING SYSTEM, AN ORIGINAL SHEET PROVIDED WITH A UNIFORM COATING OF AN ACIDIFIED SOLUTION OF AN ALKALI METAL GALLATE DRIED THEREON AND A COPY SHEET PROVIDED WITH A GELATINOUS COATING OF AN IRON LACTATE SALT, SAID SHEETS BEING ARRANGED WITH THE COATED SURFACES IN CONTIGUOUS RELATIONSHIP.
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) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |