Patent US3136652A successfully refreshed from Google Patents.
US3136652A
Expired / Lapsed
US
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Method and apparatus for coating paper
Assignee: Warren SD Co
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Filing: 1959-03-03
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Granted: 1964-06-09
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Expires: 1979-03-03
Abstract
No abstract record available.
Inventors
- 👤 Bicknell John Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:44
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/36; D21H19/44; D21H19/56; D21H19/58; D21H19/50; D21H19/54; D21H19/62; D21H23/00; D21H25/00; D21H25/08; D21H25/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
IN THE PROCESS FOR MAKING COATED PAPER WHEREIN THE PAPER BODY STOCK IS FORMED ON A PAPER MACHINE, THEN DRIED BY THE APPLICATION OF HEAT THERETO AT A TEMPERATURE OF ABOVE ABOUT 150*F., AND THEREAFTER COATED IN A CONTINUOUS SEQUENCE, THE STEPS OF: PREPARING LIQUID COATING MATERIALS INCLUDING A MINERAL FILLER, AN AQUEOUS ADHESIVE AND WATER; APPLYING SAID MATERIALS TO SAID BODY STOCK WITH SAID BODY STOCK PROCEDDING AT THE SAME RATE AT WHICH IS FORMED ON SAID PAPER MACHINE, RETARDING THE RATE OF FROMATION OF A "FILTER CAKE" OF SAID COATING MATERIALS ON SAID BODY STOCK BY LOWERING THE TEMPERATURE OF SAID BODY STOCK TO BELOW ABOUT 110*F. PRIOR TO THE APPLICATION OF SAID COATING MATERIALS THERETO; AND SMOOTHING SAID COATING MATERIALS ON SAID BODY STOCK SIMULTANEOUSLY WITH SAID APPLICATION STEP BY PASSING THE SAME THROUGH A SMOOTHING MEANS WHILE AT LEAST THE SURFACE OF SAID MATERIALS IS STILL IN SAID LIQUID STATE.
Claim 2
Dependent Claim
154 words
IN THE PROCESS FOR MAKING COATED PAPER WHEREIN THE PAPER BODY STOCK IS FORMED ON A PAPER MACHINE, THEN DRIED BY THE APPLICATION OF HEAT THERETO AT A TEMPERATURE OF ABOVE ABOUT 150*F., AND THEREAFTER COATED IN A CONTINUOUS SEQUENCE, THE STEPS OF: PREPARING LIQUID COATING MATERIALS INCLUDING A MINERAL FILLER, AN AQUEOUS ADHESIVE AND WATER; APPLYING SAID MATERIALS TO SAID BODY STOCK WITH SAID BODY STOCK PROCEDDING AT THE SAME RATE AT WHICH IS FORMED ON SAID PAPER MACHINE, RETARDING THE RATE OF FROMATION OF A "FILTER CAKE" OF SAID COATING MATERIALS ON SAID BODY STOCK BY LOWERING THE TEMPERATURE OF SAID BODY STOCK TO BELOW ABOUT 110*F. PRIOR TO THE APPLICATION OF SAID COATING MATERIALS THERETO; AND SMOOTHING SAID COATING MATERIALS ON SAID BODY STOCK SIMULTANEOUSLY WITH SAID APPLICATION STEP BY PASSING THE SAME THROUGH A SMOOTHING MEANS WHILE AT LEAST THE SURFACE OF SAID MATERIALS IS STILL IN SAID LIQUID STATE.
References Cited (Backward Citations)
US2237068A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |