Patent US2685571A successfully refreshed from Google Patents.
US2685571A
Expired / Lapsed
US
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Mineral-coated paper and composition therefor
Assignee: Warren SD Co
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Filing: 1949-02-15
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Granted: 1954-08-03
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Expires: 1969-02-15
Abstract
No abstract record available.
Inventors
- 👤 John C Stinchfield
- 👤 Kaulakis Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:13
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/36; D21H19/44; D21H19/56; D21H19/58; D21H19/38; D21H19/385; D21H19/40; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31725; Y10T428/31765; Y10T428/31768; Y10T428/31772; Y10T428/31775; Y10T428/31855; Y10T428/3188; Y10T428/31895
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
106 words
A MINERAL-COATING COMPOSITION BEING AN AQUEOUS SLURRY CONSISTING ESSENTIALLY OF A FINELY DIVIDED MINERAL PIGMENT COMPONENT, AT LEAST 20% OF WHICH IS PIGMENTARY CALCIUM CARBONATE, AND A DISPERSED ADHESIVE COMPONENT IN AN AMOUNT BETWEEN 10 AND 30 PARTS BY WEIGHT PER 100 PARTS OF PIGMENT COMPONENT, SAID ADHASIVE COMPONENT CONTAINING A SUBSTANTIAL QUANTITY OF A RUBBERY POLYMER IN THE FORM OF A PRIMARY EMULSION DIRECTLY PRODUCED BY THE EMULSION POLYMERIZATION OF A COMPOSITION COMPRISING A CONJUGATED DIENE MONOMER, THE QUANTITY OF SAID RUBBERY POLYMER PRESENT IN THE COMPOSITION BEING FROM 10 TO 44 PARTS BY WEIGHT PER EACH 100 PARTS OF THE PIGMENTARY CALCIUM CARBONATE PRESENT.
Claim 2
Dependent Claim
106 words
A MINERAL-COATING COMPOSITION BEING AN AQUEOUS SLURRY CONSISTING ESSENTIALLY OF A FINELY DIVIDED MINERAL PIGMENT COMPONENT, AT LEAST 20% OF WHICH IS PIGMENTARY CALCIUM CARBONATE, AND A DISPERSED ADHESIVE COMPONENT IN AN AMOUNT BETWEEN 10 AND 30 PARTS BY WEIGHT PER 100 PARTS OF PIGMENT COMPONENT, SAID ADHASIVE COMPONENT CONTAINING A SUBSTANTIAL QUANTITY OF A RUBBERY POLYMER IN THE FORM OF A PRIMARY EMULSION DIRECTLY PRODUCED BY THE EMULSION POLYMERIZATION OF A COMPOSITION COMPRISING A CONJUGATED DIENE MONOMER, THE QUANTITY OF SAID RUBBERY POLYMER PRESENT IN THE COMPOSITION BEING FROM 10 TO 44 PARTS BY WEIGHT PER EACH 100 PARTS OF THE PIGMENTARY CALCIUM CARBONATE PRESENT.
Claim 3
Dependent Claim
49 words
THE MINERAL-COATING COMPOSITION DEFINED IN CLAIM 1, IN WHICH THE CALCIUM CARBONATE CONTENT AMOUNTS TO FROM ABOUT 35% TO ABOUT 60% OF THE TOTAL PIGMENT COMPONENT, AND IN WHICH THE TOTAL ADHESIVE COMPONENET AMOUNTS TO BETWEEN 15 AND 20 PARTS PER EACH 100 PARTS OF THE TOTAL PIGMENT COMPONENT.
Claim 4
Dependent Claim
50 words
THE MINERAL-COATING COMPOSITION DEFINED IN CLAIM 3, IN WHICH THE PIGMENT COMPONENT CONSISTS OF CLAY AND CALCIUM CARBONATE, AND IN WHICH THE ADHESIVE COMPONENT IS A MIXTURE OF ABOUT EQUAL PARTS OF A RUBBERY COPOLYMER OF BUTADIENE AND STYRENE AND AN ADHSEIVE OF THE GROUP CONSISTING OF STARCH AND CASEIN.
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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) | 1957-08-02 | 1958-02-01 | 1958-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-02 | 1962-02-01 | 1962-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-02 | 1966-02-01 | 1966-08-03 | $7700.00 | Window Closed / Lapsed |