Patent US4790810A successfully refreshed from Google Patents.
US3137588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified starch product for coating cellulosic webs
Assignee: Primary Products Ingredients Americas LLC
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Filing: 1960-08-30
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Granted: 1964-06-16
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Expires: 1980-08-30
Abstract
No abstract record available.
Inventors
- 👤 Kelley G Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:46
CPC Classifications
C; C09; C09J; C09J103/00; C09J103/04; C09J103/10; C08; C08B; C08B31/00; C08B31/18; C08B31/185; D; D06; D06M; D06M15/00; D06M15/01; D06M15/03; D06M15/11; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31971; Y10T428/31975
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
IN THE PROCESS OF COATING A CELLULOSIC WEB WITH A PIGMENTED COATING, WHICH INCLUDES THE STEPS OF PREPARING AN AQUEOUS COATING COMPOSITION CONTAINING PASTED STARCH APPLYING SAID COMPOSITION ON SAID WEB AND DRYING THE COATING WEB AT AN ELEVATED TEMPERATURE, THE IMPROVEMENT FOR RENDERING SAID COATING RESISTANT TO WET RUBBING, WHICH COMPRISES PROVIDING A DRY POTENTIAL COATING ADHESIVE CONSISTING ESSENTIALLY OF A CARBOXY STARCH HAVING AT LEAST 0.5% CARBOXYL GROUPS AND A WATER-SOLUBLE METAL SALT THAT REACTS WITH SAID CARBOXY STARCH INTHE PRESENCE OF WATER UNDER PAPER-DRYING CONDITIONS TO RENDER THE MODIFIED STARCH SUBSTANTIALLY NON-DISPERSIBLE IN WATER, THE METAL OF SAID SALT BEING SELECTED FROM THE GROUP CONSISTING OF TITANIUM AND ZIRCONIUM, THE PROPORTION OF SAID METAL, EXPRESSED AS OXIDE, BEING AT LEAST 1% BY WEIGHT OF THE DRY STARCH WHEN THE STARCH CONTAINS AT LEAST 1% CARBOXYLGROUPS AND AT LEAST 2% BY WEIGHT OF THE DRY STARCH WHEN IT CONTAINS 0.5 TO 1% CARBOXYL GROUPS.
Claim 2
Dependent Claim
156 words
IN THE PROCESS OF COATING A CELLULOSIC WEB WITH A PIGMENTED COATING, WHICH INCLUDES THE STEPS OF PREPARING AN AQUEOUS COATING COMPOSITION CONTAINING PASTED STARCH APPLYING SAID COMPOSITION ON SAID WEB AND DRYING THE COATING WEB AT AN ELEVATED TEMPERATURE, THE IMPROVEMENT FOR RENDERING SAID COATING RESISTANT TO WET RUBBING, WHICH COMPRISES PROVIDING A DRY POTENTIAL COATING ADHESIVE CONSISTING ESSENTIALLY OF A CARBOXY STARCH HAVING AT LEAST 0.5% CARBOXYL GROUPS AND A WATER-SOLUBLE METAL SALT THAT REACTS WITH SAID CARBOXY STARCH INTHE PRESENCE OF WATER UNDER PAPER-DRYING CONDITIONS TO RENDER THE MODIFIED STARCH SUBSTANTIALLY NON-DISPERSIBLE IN WATER, THE METAL OF SAID SALT BEING SELECTED FROM THE GROUP CONSISTING OF TITANIUM AND ZIRCONIUM, THE PROPORTION OF SAID METAL, EXPRESSED AS OXIDE, BEING AT LEAST 1% BY WEIGHT OF THE DRY STARCH WHEN THE STARCH CONTAINS AT LEAST 1% CARBOXYLGROUPS AND AT LEAST 2% BY WEIGHT OF THE DRY STARCH WHEN IT CONTAINS 0.5 TO 1% CARBOXYL GROUPS.
References Cited (Backward Citations)
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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) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |