Patent US2645659A successfully refreshed from Google Patents.
US2645659A
Expired / Lapsed
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Sulfur-containing ethers of polyhydric alcohols and derivatives thereof
Assignee: Shell Development Co
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Filing: 1949-08-29
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Granted: 1953-07-14
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Expires: 1969-08-29
Abstract
No abstract record available.
Inventors
- 👤 Rupert C Morris
- 👤 John L Van Winkle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:47
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C07; C07C; C07C317/00; C07C317/16; C07C317/18; C07C323/00; C07C323/10; C07C323/11; C07C323/12; C10M2219/00; C10M2219/04; C10M2219/08; C10M2219/082; C10M2219/084; C10M2221/00; C10M2221/04; C10M2221/043; C10N; C10N2040/00; C10N2040/46; C10N2050/00; C10N2050/10; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A COMPOUND OF THE GROUP CONSISTING OF ALPHA-(HYDROCARBOTHIOALKYL) ETHERS OF ALIPHATIC OPEN-CHAIN POLYHYDRIC ALCOHOLS CONTAINING FROM 2 TO 4 HYDROXYL GROUPS AND NO MORE THAN 12 CARBON ATOMS, ALPHA-(HYDROCARBOSULFINYLALKYL) ETHERS OF ALIPHATIC OPEN-CHAIN POLYHYDRIC ALCOHOLS CONTAINING FROM 2 TO 4 HYDROXYL ALCONO MORE THAN 12 CARBON ATOMS, ALPHA-(HYDROCARBOSULFONYLALKYL) ETHERS OF ALIPHATIC OPEN-CHAIN POLYHYDRIC ALCOHOLS CONTAINING FROM 2 TO 4 HYDROXYL GROUPS AND NO MORE THAN 12 CARBON ATOMS, ESTERS OF THE AFOREDESCRIBED ALPHA ETHERS CONTAININGS AT LEAST ONE FREE ESTERIFIABLE HYDROXYL GROUP AND ALIPHATIC MONOCARBOXYLIC ACIDS CONTAINING AT LEAST SIX CARBON ATOMS, AND ESTERS OF THE AFOREDESCIRBED ALPHA-ETHERS CONTAINING AT LEAST ONE FREE ESTERIFIABLE HYDROXYL GROUP AND POLYCARBOXYLIC ACIDS CONTAINING AT LEAST 3 CARBON ATOMS.
Claim 2
Dependent Claim
115 words
A COMPOUND OF THE GROUP CONSISTING OF ALPHA-(HYDROCARBOTHIOALKYL) ETHERS OF ALIPHATIC OPEN-CHAIN POLYHYDRIC ALCOHOLS CONTAINING FROM 2 TO 4 HYDROXYL GROUPS AND NO MORE THAN 12 CARBON ATOMS, ALPHA-(HYDROCARBOSULFINYLALKYL) ETHERS OF ALIPHATIC OPEN-CHAIN POLYHYDRIC ALCOHOLS CONTAINING FROM 2 TO 4 HYDROXYL ALCONO MORE THAN 12 CARBON ATOMS, ALPHA-(HYDROCARBOSULFONYLALKYL) ETHERS OF ALIPHATIC OPEN-CHAIN POLYHYDRIC ALCOHOLS CONTAINING FROM 2 TO 4 HYDROXYL GROUPS AND NO MORE THAN 12 CARBON ATOMS, ESTERS OF THE AFOREDESCRIBED ALPHA ETHERS CONTAININGS AT LEAST ONE FREE ESTERIFIABLE HYDROXYL GROUP AND ALIPHATIC MONOCARBOXYLIC ACIDS CONTAINING AT LEAST SIX CARBON ATOMS, AND ESTERS OF THE AFOREDESCIRBED ALPHA-ETHERS CONTAINING AT LEAST ONE FREE ESTERIFIABLE HYDROXYL GROUP AND POLYCARBOXYLIC ACIDS CONTAINING AT LEAST 3 CARBON ATOMS.
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) | 1956-07-13 | 1957-01-12 | 1957-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-13 | 1961-01-12 | 1961-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-13 | 1965-01-12 | 1965-07-14 | $7700.00 | Window Closed / Lapsed |