US3145117A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for production of pressure sensitive recording medium
Assignee: Individual
•
Filing: 1961-03-22
•
Granted: 1964-08-18
•
Expires: 1981-03-22
Abstract
No abstract record available.
Inventors
- 👤 Katchaisky Aharon
- 👤 Vofsi David
- 👤 Gassner Saul Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:06
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; C; C09; C09D; C09D123/00; C09D123/02; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249962; Y10T428/249963; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31899; Y10T428/31902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
A PROCESS FOR THE PRODUCTION OF A PRESSURE SENSITIVE RECORDING MEDIUM OF THE AUTO-COPY PAPER TYPE, WHICH COMPRISES (A) DISSOLVING A MATERIAL SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE HAVING A MOLECULAR WEIGHT IN THE RANGE OF FROM 3,000 TO 150,000 AND POLYPROPYLENE HAVING A MELT INDEX OF 1-9 AND A SPECIFIC GRAVITY OF 0.90-0.91, IN A SOLVENT SELECTED FROM THE GROUP CONSISTING OF AROMATIC HYDROCARBONS, ALIPHATIC HYDROCARBONS AND HALOGENATED HYDROCARBONS; (B) ADDING AN ORGANIC BINDER SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER, SYNTHETIC RUBBER AND POLYSTYRENE THERETO, THE RESULTING SOLUTION CONTAINING FROM 1% TO 10% BY WEIGHT OF SAID MATERIAL AND FROM 0.2% TO 5% BY WEIGHT OF SAID ORGANIC BINDER; (C) APPLYING SAID SOLUTION AT AN ELEVATED TEMPERATURE TO A SUPPORTING SHEET; AND (D) PERMITTING SAID SOLVENT TO EVAPORATE TO PRODUCE AN OPAQUE LAYER ADHERED TO THE SUPPORTING SHEET BY SAID ORGANIC BINDER, SAID LAYER HAVING A THICKNESS OF FROM 5 TO 100 MICRONS, AND POSSESSING A COLOR DISTINCT FROM THAT OF SAID SUPPORTING SHEET.
Claim 2
Dependent Claim
168 words
A PROCESS FOR THE PRODUCTION OF A PRESSURE SENSITIVE RECORDING MEDIUM OF THE AUTO-COPY PAPER TYPE, WHICH COMPRISES (A) DISSOLVING A MATERIAL SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE HAVING A MOLECULAR WEIGHT IN THE RANGE OF FROM 3,000 TO 150,000 AND POLYPROPYLENE HAVING A MELT INDEX OF 1-9 AND A SPECIFIC GRAVITY OF 0.90-0.91, IN A SOLVENT SELECTED FROM THE GROUP CONSISTING OF AROMATIC HYDROCARBONS, ALIPHATIC HYDROCARBONS AND HALOGENATED HYDROCARBONS; (B) ADDING AN ORGANIC BINDER SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER, SYNTHETIC RUBBER AND POLYSTYRENE THERETO, THE RESULTING SOLUTION CONTAINING FROM 1% TO 10% BY WEIGHT OF SAID MATERIAL AND FROM 0.2% TO 5% BY WEIGHT OF SAID ORGANIC BINDER; (C) APPLYING SAID SOLUTION AT AN ELEVATED TEMPERATURE TO A SUPPORTING SHEET; AND (D) PERMITTING SAID SOLVENT TO EVAPORATE TO PRODUCE AN OPAQUE LAYER ADHERED TO THE SUPPORTING SHEET BY SAID ORGANIC BINDER, SAID LAYER HAVING A THICKNESS OF FROM 5 TO 100 MICRONS, AND POSSESSING A COLOR DISTINCT FROM THAT OF SAID SUPPORTING SHEET.
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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) | 1967-08-18 | 1968-02-17 | 1968-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-18 | 1972-02-17 | 1972-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-18 | 1976-02-17 | 1976-08-18 | $7700.00 | Window Closed / Lapsed |