US2819980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing a cold water soluble laundry starch and the product thereof
Assignee: National Industrial Products Co
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Filing: 1955-06-20
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Granted: 1958-01-14
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Expires: 1975-06-20
Abstract
No abstract record available.
Inventors
- 👤 Frank P Mccombs
- 👤 Roy G Hyldon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:13
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/01; D06M15/03; D06M15/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A PROCESS OF PRODUCING A COLD WATER SOLUBLE LAUNDRY STARCH WHICH CONSISTS OF SLURRYING A STARCH, ADDING BORAX IN AN AMOUNT CORRESPONDING TO FROM 7% TO 15% OF THE STARCH BY WEIGHT, ADJUSTING THE PH OF THE MIXTURE TO A PH, IN THE RANGE OF 3.5 TO 6.5 BY THE ADDITION OF AN ACID, ROLLING THE DISPERSION DRY AND STIFTING.
Claim 2
Dependent Claim
60 words
A PROCESS OF PRODUCING A COLD WATER SOLUBLE LAUNDRY STARCH WHICH CONSISTS OF SLURRYING A STARCH, ADDING BORAX IN AN AMOUNT CORRESPONDING TO FROM 7% TO 15% OF THE STARCH BY WEIGHT, ADJUSTING THE PH OF THE MIXTURE TO A PH, IN THE RANGE OF 3.5 TO 6.5 BY THE ADDITION OF AN ACID, ROLLING THE DISPERSION DRY AND STIFTING.
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) | 1961-01-13 | 1961-07-15 | 1962-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-13 | 1965-07-15 | 1966-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-13 | 1969-07-15 | 1970-01-14 | $7700.00 | Window Closed / Lapsed |