US2859351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making permanent facsimile copies
Assignee: 3M Co
•
Filing: 1954-10-25
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Granted: 1958-11-04
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Expires: 1974-10-25
Abstract
No abstract record available.
Inventors
- 👤 Bryce L Clark
- 👤 Carl S Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:26
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/36; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S430/00; Y10S430/165; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31801; Y10T428/31804; Y10T428/31808; Y10T428/31812; Y10T428/31971; Y10T428/31993
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
THE METHOD OF MAKING A PERMANENT FASCIMILE COPY OF A GRAPHIC ORIGINAL HAVING GRAPHIC REPRESENTATIONS HIGHLY ABSORPTIVE OF INFRA-RED RAYS ON A BACKGROUND RELATIVELY NON-ABSORPTIVE OF INFRA-RED RAYS, COMPRISING PLACING A HEAT-SENSITIVE COPYRIGHT-PAPER, HAVING ON A SUPPORTING BASE A VISIBLY OPAQUE HEAT-TRANSPARENTIZABLE LAYER COMPRISING WAXY PARTICLES FUSIBLE TO A PERMANENTLY TRANSPARENT STATE AND DISPERSED IN A RESINOUS FILM-FORMING ORGANIC BINDER INFUSIBLE AT THE FUSION TEMPERATURE OF SAID WAXY PARTICLES, IN HEAT-CONDUCTIVE RELATIONSHIP WITH SAID GRAPHIC ORIGINAL AND THEN STRONGLY AND BRIEFLY IRRADIATING THE GRAPHIC ORIGINAL WITH INFRA-RED RAYS, THEREBY PRODUCING AT THE HEAT-TRANSPARENTIZABLE LAYER OF A HEAT PATTERN CORRESPONDING TO SAID GRAPHIC REPRESENTATIONS AND OF AN INTENSITY SUFFICIENT TO TRANSPARENTIZE THE CORRESPONDING AREAS OF SAID LAYER, AND WITHOUT OFFSETTING OF FUSIBLE MATERIAL.
Claim 2
Independent Claim
122 words
THE METHOD OF MAKING A PERMANENT FASCIMILE COPY OF A GRAPHIC ORIGINAL HAVING GRAPHIC REPRESENTATIONS HIGHLY ABSORPTIVE OF INFRA-RED RAYS ON A BACKGROUND RELATIVELY NON-ABSORPTIVE OF INFRA-RED RAYS, COMPRISING PLACING A HEAT-SENSITIVE COPYRIGHT-PAPER, HAVING ON A SUPPORTING BASE A VISIBLY OPAQUE HEAT-TRANSPARENTIZABLE LAYER COMPRISING WAXY PARTICLES FUSIBLE TO A PERMANENTLY TRANSPARENT STATE AND DISPERSED IN A RESINOUS FILM-FORMING ORGANIC BINDER INFUSIBLE AT THE FUSION TEMPERATURE OF SAID WAXY PARTICLES, IN HEAT-CONDUCTIVE RELATIONSHIP WITH SAID GRAPHIC ORIGINAL AND THEN STRONGLY AND BRIEFLY IRRADIATING THE GRAPHIC ORIGINAL WITH INFRA-RED RAYS, THEREBY PRODUCING AT THE HEAT-TRANSPARENTIZABLE LAYER OF A HEAT PATTERN CORRESPONDING TO SAID GRAPHIC REPRESENTATIONS AND OF AN INTENSITY SUFFICIENT TO TRANSPARENTIZE THE CORRESPONDING AREAS OF SAID LAYER, AND WITHOUT OFFSETTING OF FUSIBLE MATERIAL.
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) | 1961-11-03 | 1962-05-05 | 1962-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-03 | 1966-05-05 | 1966-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-03 | 1970-05-05 | 1970-11-04 | $7700.00 | Window Closed / Lapsed |