Patent US2836152A successfully refreshed from Google Patents.
US2836152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for correcting hectographic master sheets
Assignee: Rose Ribbon and Carbon Mfg Co Inc
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Filing: 1955-01-19
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Granted: 1958-05-27
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Expires: 1975-01-19
Abstract
No abstract record available.
Inventors
- 👤 Rosenblum Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:45
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/025; B41M5/04; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2852; Y10T428/2857
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A CORRECTION SHEET FOR THE REMOVAL, WITHOUT RUBBING OR ABRASION, OF AN UNWANTED SPIRIT DUPLICATING INK MARK OF PAPER, COMPRISING A BACKING SHEET COATED WITH A FILM OF PAPER, COMPRISING A BACKING SHEET COATED WITH A FILM OF MATERIAL WHICH IS ONLY SLIGHTLY TACKY THAN CONVENPRESSURE, SAID MATERIAL BEING MORE TCKY THAN CONVENTIONAL SPIRIT DUPLICATING INKS WHEREBY IT WILL REMOVE INK FROM SAID UNWANTED INK MARK WHEN FIRMLY PRESSED AGAINST IT, BUT INSUFFICIENTLY TACKY TO PICK FIBER FROM THE PAPER OF WHICH THE MASTER SHEET IS COMPOSED, SAID MATERIAL COMPRISING A MAJOR PORTION OF WAX AND 10% TO 20% OF A FILLER WHICH IS AN ABSORBENT FOR SPIRIT DUPLICATING INKS.
Claim 2
Dependent Claim
110 words
A CORRECTION SHEET FOR THE REMOVAL, WITHOUT RUBBING OR ABRASION, OF AN UNWANTED SPIRIT DUPLICATING INK MARK OF PAPER, COMPRISING A BACKING SHEET COATED WITH A FILM OF PAPER, COMPRISING A BACKING SHEET COATED WITH A FILM OF MATERIAL WHICH IS ONLY SLIGHTLY TACKY THAN CONVENPRESSURE, SAID MATERIAL BEING MORE TCKY THAN CONVENTIONAL SPIRIT DUPLICATING INKS WHEREBY IT WILL REMOVE INK FROM SAID UNWANTED INK MARK WHEN FIRMLY PRESSED AGAINST IT, BUT INSUFFICIENTLY TACKY TO PICK FIBER FROM THE PAPER OF WHICH THE MASTER SHEET IS COMPOSED, SAID MATERIAL COMPRISING A MAJOR PORTION OF WAX AND 10% TO 20% OF A FILLER WHICH IS AN ABSORBENT FOR SPIRIT DUPLICATING INKS.
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) | 1961-05-26 | 1961-11-25 | 1962-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-26 | 1965-11-25 | 1966-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-26 | 1969-11-25 | 1970-05-27 | $7700.00 | Window Closed / Lapsed |