Patent US1869448A successfully refreshed from Google Patents.
Patent US2529461A successfully refreshed from Google Patents.
US2529461A
Expired / Lapsed
US
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Emulsions
Assignee: Sharp and Dohme Inc
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Filing: 1949-04-30
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Granted: 1950-11-07
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Expires: 1969-04-30
Abstract
No abstract record available.
Inventors
- 👤 Herman J Schneiderwirth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:09
CPC Classifications
C; C09; C09K; C09K23/00; C09K23/017
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A THIXOTROPIC EMULSION COMPRISING AN AQUEOUS VEHICLE, AT LEAST ONE WATER INSOLUBLE ALKALINE EARTH METAL SALT OF THE GROUP CONSITING OF PHOSPHATE, CARBONATE, SULFATE AND HYDROXIDE, STABLY SUSPENDABLY DISPERSED THEREIN, A WATER SOLUBLE CITRATE OF AN ALKALINE BASE DISSOLVED IN SAID AQUEOUS VEHICLE IN AN AMOUNT SUFFICIENT BUT NOT OVER 5%, TO PRODUCE THE THIXOTROPIC CHARACTER OF THE SYSTEM, SAID ALKALINE BASE BEING A MEMBER OF THE GROUP CONSISTING OF THE ALKALI METAL BASES AND THE NITROGEN BASES, AND AT LEAST ONE SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF AN OIL, AND A FAT, IN AN AMOUNT UP TO ABOUT 40%.
Claim 2
Dependent Claim
101 words
A THIXOTROPIC EMULSION COMPRISING AN AQUEOUS VEHICLE, AT LEAST ONE WATER INSOLUBLE ALKALINE EARTH METAL SALT OF THE GROUP CONSITING OF PHOSPHATE, CARBONATE, SULFATE AND HYDROXIDE, STABLY SUSPENDABLY DISPERSED THEREIN, A WATER SOLUBLE CITRATE OF AN ALKALINE BASE DISSOLVED IN SAID AQUEOUS VEHICLE IN AN AMOUNT SUFFICIENT BUT NOT OVER 5%, TO PRODUCE THE THIXOTROPIC CHARACTER OF THE SYSTEM, SAID ALKALINE BASE BEING A MEMBER OF THE GROUP CONSISTING OF THE ALKALI METAL BASES AND THE NITROGEN BASES, AND AT LEAST ONE SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF AN OIL, AND A FAT, IN AN AMOUNT UP TO ABOUT 40%.
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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) | 1953-11-06 | 1954-05-08 | 1954-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-06 | 1958-05-08 | 1958-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-06 | 1962-05-08 | 1962-11-07 | $7700.00 | Window Closed / Lapsed |