Patent US2931753A successfully refreshed from Google Patents.
US2931753A
Expired / Lapsed
US
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Organic ammonium salts of polysaccharide carboxylic acids
Assignee: ERSKINE
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Filing: 1953-11-18
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Granted: 1960-04-05
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Expires: 1973-11-18
Abstract
No abstract record available.
Inventors
- 👤 Ruth M Chesbro
- 👤 Archibald M Erskine
- 👤 Bahman K Shahrokh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:59
CPC Classifications
C; C08; C08B; C08B37/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
109 words
THE METHOD OF TREATING A MATERIAL TO PROTECT IT AGAINST THE ACTION OF MICROBIALS, WHICH COMPRISES APPLYING SEPARATELY AND IN SUCCESSION TWO REACTANTS IN WATER SOLUTION, TO FORM IN SITU UPON SAID MATERIAL REACTANTS COMPRODUCT OF SAID REACTANTS, ONE OF SAID REACTANTS COMPRISING A SOLUTION OF A WATER-SOLUBLE, ANTIMICROBIOLOGICAL, ORGANIC AMMONIUM COMPOUND HAVING IN ITS AMMONIUM GROUP A RADICAL CONTAINING A MINIMUM OF EIGHT CARBON ATOMS BONDED TO THE NITROGEN ATOM IN SAID GROUP AND THE OTHER REACTANT COMPRISING A WATER-SOLUBLE SALT OF A POLYSACCHARIDE CARBOXYLIC ACID, WHEREBY THERE IS PRECIPITATED UPON SAID MATERIAL, A WATER AND OIL-INSOLUBLE HIGH MOLECULAR WEIGHT ORGANIC AMMONIUM SLAT OF A POLYSACCHARIDE CARBOXYLIC ACID.
References Cited (Backward Citations)
US2106298A
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US2158485A
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US2233475A
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US2314277A
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US2561418A
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US2614634A
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US2617707A
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US2688598A
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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) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |