US2756164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing moisture resistant coated paper webs
Assignee: Gardner Board and Carton Co
•
Filing: 1950-10-18
•
Granted: 1956-07-24
•
Expires: 1970-10-18
Abstract
No abstract record available.
Inventors
- 👤 Harry C Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:01
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/36; D21H19/44; D21H19/56; D21H19/60; D21H19/54; D21H19/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
IN A PROCESS OF MAKING COATED WEBS OF PAPER AND BOARD CHARACTERIZED FIRST BY PLACTICIZING THE SURFACE OF THE WEB BY IMPOSING THEREON A PLASTICIZING SOLUTION ON A BREAKER STACK OF CALENDERS ACTING TO WORK THE WEB SURFACE, AND SECOND BY IMPRINTING A HIGH SOLIDS MINERAL COATING MIXTURE ON THE PREPARED SURFACE OF THE WEB WHILE IT IS STILL IN PLASTICIZED CONDITION, THE STEPS OF INCLUDING IN THE PLASTICIZING SOLUTION AN ACID CATALYST AND A HEAT REMOVABLE ALKALINE SUBSTANCE TO RAISE ITS PH ABOVE 7, THE SAID COATING MIXTURE HAVING A STARCH BINDER, AND INCLUDING IN SAID COATING MIXTURE A RESIN CAPABLE OF BEING CATALYZED BY SAID ACIDIC CATALYST UPON REMOVAL OF SAID REMOVABLE ALKALINE SUBSTANCE BY HEAT, AND PRODUCING REMOVAL OF SAID REMOVABLE ALKALI.
Claim 2
Dependent Claim
125 words
IN A PROCESS OF MAKING COATED WEBS OF PAPER AND BOARD CHARACTERIZED FIRST BY PLACTICIZING THE SURFACE OF THE WEB BY IMPOSING THEREON A PLASTICIZING SOLUTION ON A BREAKER STACK OF CALENDERS ACTING TO WORK THE WEB SURFACE, AND SECOND BY IMPRINTING A HIGH SOLIDS MINERAL COATING MIXTURE ON THE PREPARED SURFACE OF THE WEB WHILE IT IS STILL IN PLASTICIZED CONDITION, THE STEPS OF INCLUDING IN THE PLASTICIZING SOLUTION AN ACID CATALYST AND A HEAT REMOVABLE ALKALINE SUBSTANCE TO RAISE ITS PH ABOVE 7, THE SAID COATING MIXTURE HAVING A STARCH BINDER, AND INCLUDING IN SAID COATING MIXTURE A RESIN CAPABLE OF BEING CATALYZED BY SAID ACIDIC CATALYST UPON REMOVAL OF SAID REMOVABLE ALKALINE SUBSTANCE BY HEAT, AND PRODUCING REMOVAL OF SAID REMOVABLE ALKALI.
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) | 1959-07-24 | 1960-01-23 | 1960-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-24 | 1964-01-23 | 1964-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-24 | 1968-01-23 | 1968-07-24 | $7700.00 | Window Closed / Lapsed |