Patent US2963513A successfully refreshed from Google Patents.
US2963513A
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US
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Polyglycol ether derivatives
Assignee: BASF Schweiz AG
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Filing: 1956-09-21
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Granted: 1960-12-06
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Expires: 1976-09-21
Abstract
No abstract record available.
Inventors
- 👤 Albrecht Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:35
CPC Classifications
C; C09; C09B; C09B11/00; C09B11/04; C09B11/10; C09B11/22; D; D06; D06P; D06P1/00; D06P1/44; D06P1/60; D06P1/607; D06P1/6076; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/917
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
7 words
A POLYGLYCOLETHER DERIVATIVE CORRESPONDING TO THE FORMULA
Claim 2
Dependent Claim
7 words
A POLYGLYCOLETHER DERIVATIVE CORRESPONDING TO THE FORMULA
Claim 3
Dependent Claim
13 words
A COMPOSITION OF MATTER CONSISTING SUBSTANTIALLY OF POLYGLYCOLETHER DERIVATIVES CORRESPONDING TO THE FORMULA
Claim 4
Dependent Claim
13 words
A COMPOSITION OF MATTER CONSISTING SUBSTANTIALLY OF POLYGLYCOLETHER DERIVATIVES CORRESPONDING TO THE FORMULA
References Cited (Backward Citations)
US2470080A
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US2681354A
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US2638404A
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US2739980A
Cited
US2813044A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |