Patent US3998216A successfully refreshed from Google Patents.
US3225017A
Expired / Lapsed
US
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Modified polysulfide composition
Assignee: Products Res Co
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Filing: 1961-10-30
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Granted: 1965-12-21
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Expires: 1981-10-30
Abstract
No abstract record available.
Inventors
- 👤 Irvin P Seegman
- 👤 Morris Lester
- 👤 Paul A Mallard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:17
CPC Classifications
C; C08; C08L; C08L81/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
A STABLE UNITARY LIQUID POLYMER COMPOSITION PROTECTED FROM MOISTURE AND CAPABLE OF BEING SHIPPED AND STORED IN A SINGLE CONTAINER AND LATER BEING DEPOSITED IN PLACE WITHOUT AGITATION OR INTERMIXING WITH OTHER MATERIAL FOR COMPLETE CURING BY CONTACT OF ITS SURFACE WITH SURROUNDINGS CONTAINING ESSENTIAL ONLY MOISTURE, SAID COMPOSITION COMPRISING ESSENTAILLY (A) A LIQUID POLYALKYLENE POLYSULFIDE POLYMER HAVING THROUGHLY DISPERSED THEREIN, (B) A DORMANT CURING AGNET IN AN AMOUNT SUFFICIENT TO CURE SAID POLYMER WHICH IS ACTIVATED BY THE PRESENCE OF MOISTURE, AND C(C) AN ALKALINE DESICCATING DELIQUESCENT ACCELERATING AGENT ADAPTED AND SUFFICIENT TO MAINTAIN SAID POLYMER IN DRY CONDITION DURING SHIPMENT AND STORAGE AND TO ATTRACT AND ABSORB MOISTURE FROM ITS SURROUNDINGS AFTER DEPOSITION IN PLACE TO HASTEN THE CURING OF SAID POLYMER BY SIAD CURING AGENT, WHEREIN (B) AND (C) ARE DIFFERENT SUBSTANCES AND SAID ACCELARATING AGENT IS WATER-SOLUBLE AND COMPOSED OF AT LEAST ONE NUMBER OF THE GROUP CONSISTING OF THE ALKALI METAL AND ALKALINE EARTH METAL OXIDES, PEROXIDES, HYDROXIDES AND SALTS OF WEAK ACIDS.
Claim 2
Dependent Claim
168 words
A STABLE UNITARY LIQUID POLYMER COMPOSITION PROTECTED FROM MOISTURE AND CAPABLE OF BEING SHIPPED AND STORED IN A SINGLE CONTAINER AND LATER BEING DEPOSITED IN PLACE WITHOUT AGITATION OR INTERMIXING WITH OTHER MATERIAL FOR COMPLETE CURING BY CONTACT OF ITS SURFACE WITH SURROUNDINGS CONTAINING ESSENTIAL ONLY MOISTURE, SAID COMPOSITION COMPRISING ESSENTAILLY (A) A LIQUID POLYALKYLENE POLYSULFIDE POLYMER HAVING THROUGHLY DISPERSED THEREIN, (B) A DORMANT CURING AGNET IN AN AMOUNT SUFFICIENT TO CURE SAID POLYMER WHICH IS ACTIVATED BY THE PRESENCE OF MOISTURE, AND C(C) AN ALKALINE DESICCATING DELIQUESCENT ACCELERATING AGENT ADAPTED AND SUFFICIENT TO MAINTAIN SAID POLYMER IN DRY CONDITION DURING SHIPMENT AND STORAGE AND TO ATTRACT AND ABSORB MOISTURE FROM ITS SURROUNDINGS AFTER DEPOSITION IN PLACE TO HASTEN THE CURING OF SAID POLYMER BY SIAD CURING AGENT, WHEREIN (B) AND (C) ARE DIFFERENT SUBSTANCES AND SAID ACCELARATING AGENT IS WATER-SOLUBLE AND COMPOSED OF AT LEAST ONE NUMBER OF THE GROUP CONSISTING OF THE ALKALI METAL AND ALKALINE EARTH METAL OXIDES, PEROXIDES, HYDROXIDES AND SALTS OF WEAK ACIDS.
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) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |