US3081199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified starch product for coating cellulosic webs
Assignee: Primary Products Ingredients Americas LLC
•
Filing: 1959-10-06
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Granted: 1963-03-12
•
Expires: 1979-10-06
Abstract
No abstract record available.
Inventors
- 👤 Kelley G Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:56
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/01; D06M15/03; D06M15/11; C; C08; C08B; C08B31/00; C08B31/18; C08B31/185; C09; C09J; C09J103/00; C09J103/04; C09J103/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
THE METHOD OF COATING PAPER WITH A WET-RUB RESISTANT, PIGMENTED COATING THAT COMPRISES PROVIDING AN AQUEOUS COATING COLOUR CONTAINING THE PIGMENT, A SMALL PROPORTION OF A LONG CHAIN, SOAP-FORMING FATTY ACID AND FROM 12 TO 25% PASTED STARCH BASED ON THE WEIGHT OF PIGMENT, SAID STARCH HAVING AS ITS ACTIVE ACIDIC GROUP, AT LEAST 0.5% CARBOXYL GROUPS, DEPOSITING SAID COATING COLOR ON THE PAPER WEB, THEN APPLYING TO THE DEPOSITED COATING COLOR AN AQUEOUS SOLUTION OF A CHOROMIUM SALT CONTAINING AT LEAST 0.5% CHROMIUM, EXPRESSED AS OXIDE, WHEN SAID STARCH HAS 1% CARBOXYL GROUP AND AT LEAST 1% CHROMIUM, EXPRESSED AS OXIDE, WHEN SAD STARCH HAS 0.5% TO 1.0% CARBOXYL GROUPS, AND DRYING THE COATING, WHEREBY THE CHROMIUM REACTS WITH THE STARCH IN SITU AND INSOLUBILIZES IT, SAID CHROMIUM SALT BEING SELECTED FROM THE GROUP CONSISTING OF CHROMIUM TRIHALIDES, CHROMIC SULFATE, CHROMIC NITRATE, CHROMIC ACETATE, CHROMIC POTASSIUM SULFATE, CHROMIC ACID AND THE AMMONIUM AND ALKALI METAL CHROMATES AND DICHROMTES.
Claim 2
Independent Claim
159 words
THE METHOD OF COATING PAPER WITH A WET-RUB RESISTANT, PIGMENTED COATING THAT COMPRISES PROVIDING AN AQUEOUS COATING COLOUR CONTAINING THE PIGMENT, A SMALL PROPORTION OF A LONG CHAIN, SOAP-FORMING FATTY ACID AND FROM 12 TO 25% PASTED STARCH BASED ON THE WEIGHT OF PIGMENT, SAID STARCH HAVING AS ITS ACTIVE ACIDIC GROUP, AT LEAST 0.5% CARBOXYL GROUPS, DEPOSITING SAID COATING COLOR ON THE PAPER WEB, THEN APPLYING TO THE DEPOSITED COATING COLOR AN AQUEOUS SOLUTION OF A CHOROMIUM SALT CONTAINING AT LEAST 0.5% CHROMIUM, EXPRESSED AS OXIDE, WHEN SAID STARCH HAS 1% CARBOXYL GROUP AND AT LEAST 1% CHROMIUM, EXPRESSED AS OXIDE, WHEN SAD STARCH HAS 0.5% TO 1.0% CARBOXYL GROUPS, AND DRYING THE COATING, WHEREBY THE CHROMIUM REACTS WITH THE STARCH IN SITU AND INSOLUBILIZES IT, SAID CHROMIUM SALT BEING SELECTED FROM THE GROUP CONSISTING OF CHROMIUM TRIHALIDES, CHROMIC SULFATE, CHROMIC NITRATE, CHROMIC ACETATE, CHROMIC POTASSIUM SULFATE, CHROMIC ACID AND THE AMMONIUM AND ALKALI METAL CHROMATES AND DICHROMTES.
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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) | 1966-03-11 | 1966-09-10 | 1967-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-11 | 1970-09-10 | 1971-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-11 | 1974-09-10 | 1975-03-12 | $7700.00 | Window Closed / Lapsed |