Patent US2611313A successfully refreshed from Google Patents.
US2611313A
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Duplicating method
Assignee: Hammermill Paper Co
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Filing: 1946-12-10
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Granted: 1952-09-23
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Expires: 1966-12-10
Abstract
No abstract record available.
Inventors
- 👤 Keller Ray Bennett
- 👤 Dawson Harrold Bowman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:03
CPC Classifications
B; B41; B41J; B41J3/00; B41J3/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A METHOD OF DUPLICATING WHICH COMPRISES PROVIDING A MASTER SHEET HAVING A LAYER OF DUPLICATING MATERIAL SOLUBLE IN A DUPLICATING FLUID, A LAYER OF PROTECTIVE MATERIAL INSOLUBLE IN SAID DUPLICATING FLUID OVERLYING SAID LAYER OF DUPLICATING MATERIAL, AND A MICRO-THIN PARTING LAYER OF WAX INTERPOSED BETWEEN SAID LAYER OF DUPLICATING MATERIAL AND SAID PROTECTIVE LAYER; TRANSFERRING LOCALIZED AREAS OF THE PROTECTIVE LAYER AND PARTING LAYER OF SAID MASTER SHEET TO A BACKING SHEET BY THE APPLICATION OF IMPACT OR PRESSURE; SEPARATING SAID BACKING SHEET AND SAID MASTER SHEET TO EXPOSE THE DUPLICATING MATERIAL IN SAID MASTER SHEET ONLY WITHIN SAID LOCALIZED AREAS; AND FORMING A PLURALITY OF DUPLICATE COPIES FROM THE DUPLICATING MATERIAL THUS EXPOSED.
Claim 2
Independent Claim
115 words
A METHOD OF DUPLICATING WHICH COMPRISES PROVIDING A MASTER SHEET HAVING A LAYER OF DUPLICATING MATERIAL SOLUBLE IN A DUPLICATING FLUID, A LAYER OF PROTECTIVE MATERIAL INSOLUBLE IN SAID DUPLICATING FLUID OVERLYING SAID LAYER OF DUPLICATING MATERIAL, AND A MICRO-THIN PARTING LAYER OF WAX INTERPOSED BETWEEN SAID LAYER OF DUPLICATING MATERIAL AND SAID PROTECTIVE LAYER; TRANSFERRING LOCALIZED AREAS OF THE PROTECTIVE LAYER AND PARTING LAYER OF SAID MASTER SHEET TO A BACKING SHEET BY THE APPLICATION OF IMPACT OR PRESSURE; SEPARATING SAID BACKING SHEET AND SAID MASTER SHEET TO EXPOSE THE DUPLICATING MATERIAL IN SAID MASTER SHEET ONLY WITHIN SAID LOCALIZED AREAS; AND FORMING A PLURALITY OF DUPLICATE COPIES FROM THE DUPLICATING MATERIAL THUS EXPOSED.
References Cited (Backward Citations)
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US1925235A
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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) | 1955-09-23 | 1956-03-24 | 1956-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-23 | 1960-03-24 | 1960-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-23 | 1964-03-24 | 1964-09-23 | $7700.00 | Window Closed / Lapsed |