US3369040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymercaptans and their preparation from epithio compounds
Assignee: Shell USA Inc
•
Filing: 1962-10-19
•
Granted: 1968-02-13
•
Expires: 1982-10-19
Abstract
No abstract record available.
Inventors
- 👤 Acetis William De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:59
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/66; C07; C07C; C07C321/00; C07C321/02; C07C321/04; C07C321/06; C07C321/22; C07C323/00; C07C323/10; C07C323/11; C07C323/12; C07C323/16; C07D; C07D339/00; C07D339/02; C07D339/06; C08G59/20; C08G59/22; C08G59/30; C08G59/302; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
13 words
A POLYMERCAPTAN OF THE GROUP CONSISTING OF (1) POLYMERCAPTAN POLYETHERS OF THE FORMULA
Claim 2
Dependent Claim
13 words
A POLYMERCAPTAN OF THE GROUP CONSISTING OF (1) POLYMERCAPTAN POLYETHERS OF THE FORMULA
Claim 3
Dependent Claim
26 words
A PROCESS FOR PREPARING POLYMERCAPTANS AS DESCRIBED IN CLAIM 1 WHICH COMPRISES REACTING A POLYTHIIRANE COMPOUND OF THE GROUP CONSISTING OF (1) POLYTHIIRANES OF THE FORMULA
References Cited (Backward Citations)
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Cited
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US3066149A
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US3067171A
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-12 | 1971-08-14 | 1972-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-12 | 1975-08-14 | 1976-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-12 | 1979-08-14 | 1980-02-13 | $7700.00 | Window Closed / Lapsed |