Patent US2223672A successfully refreshed from Google Patents.
US2803579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making an impression medium
Assignee: Buckeye Ribbon and Carbon Co
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Filing: 1954-09-01
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Granted: 1957-08-20
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Expires: 1974-09-01
Abstract
No abstract record available.
Inventors
- 👤 Walter J Stolle
- 👤 Joseph H Glaser
- 👤 Arthur G Kjellstrand
- 👤 Leonard J Immke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:15
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
THE METHOF OF MAKING A COPY-PRODUCING MEDIUMM WHICH COMPRISES THE STEPS OF APPLYING A CARBONIZING INK COMPOSISTION AT ELEVATED TEMPERATURE AND IN THE LIQUID PHASE TO ONE SIDE OF A BACKING SHEET OF SUBSTANTIALLY NONPOROUS PAPER AND THEREBY FORMING A CONTINUOUS COATINGG ON SAID BACKING SHEET, BRINGING A WEB OF SUBSTANTIALLY POROUS PAPER INTO CONTACT WITH THE INK COATING BEFORE THE INK HAS COOLED AND SET, HEATING THE IINK LAYER OF THE RESULTING ASSENBLY, THEN PROMPTLY FIRMLY PRESSING THE SAID ASSEMBLY AND EXTRUDING INK THROUGH THE WEB AND MOVING THE WEB TOWARDS THE BACKING SHEET TO PROVIDE AN INK LAYER OF SUBSTANTIALLY UNIFORM THICKNESS BETWEEN THE SAID WEB AND SHEET, AND COOLING THE PRESSED LAMINATED ASSEMBLY AND HARDENING THE INK ON THE SURFACE OF THE ASSEMBLY AND BETWEEN THE WEB AND THE BACKING SHEET WHILE THE WEB AND SHEET ARE MAINTAINED IN UNIFORM SPACED RELATION TO EACH OTHER.
Claim 2
Dependent Claim
148 words
THE METHOF OF MAKING A COPY-PRODUCING MEDIUMM WHICH COMPRISES THE STEPS OF APPLYING A CARBONIZING INK COMPOSISTION AT ELEVATED TEMPERATURE AND IN THE LIQUID PHASE TO ONE SIDE OF A BACKING SHEET OF SUBSTANTIALLY NONPOROUS PAPER AND THEREBY FORMING A CONTINUOUS COATINGG ON SAID BACKING SHEET, BRINGING A WEB OF SUBSTANTIALLY POROUS PAPER INTO CONTACT WITH THE INK COATING BEFORE THE INK HAS COOLED AND SET, HEATING THE IINK LAYER OF THE RESULTING ASSENBLY, THEN PROMPTLY FIRMLY PRESSING THE SAID ASSEMBLY AND EXTRUDING INK THROUGH THE WEB AND MOVING THE WEB TOWARDS THE BACKING SHEET TO PROVIDE AN INK LAYER OF SUBSTANTIALLY UNIFORM THICKNESS BETWEEN THE SAID WEB AND SHEET, AND COOLING THE PRESSED LAMINATED ASSEMBLY AND HARDENING THE INK ON THE SURFACE OF THE ASSEMBLY AND BETWEEN THE WEB AND THE BACKING SHEET WHILE THE WEB AND SHEET ARE MAINTAINED IN UNIFORM SPACED RELATION TO EACH OTHER.
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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) | 1960-08-19 | 1961-02-18 | 1961-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-19 | 1965-02-18 | 1965-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-19 | 1969-02-18 | 1969-08-20 | $7700.00 | Window Closed / Lapsed |