US2630457A
Expired / Lapsed
US
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Benzyl hydroxy diphenyl polyglycol ethers
Assignee: Bayer AG
•
Filing: 1949-01-12
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Granted: 1953-03-03
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Expires: 1969-01-12
Abstract
No abstract record available.
Inventors
- 👤 Hansen Kurt Hans Ernst
- 👤 Drapal Othmar Ludwig
- 👤 Hintzmann Karl Wilhelm
- 👤 Wegler Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:52
CPC Classifications
A; A01; A01N; A01N25/00; A01N25/30; C; C09; C09K; C09K23/00; C09K23/42; Y; Y10; Y10S; Y10S516/00; Y10S516/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
POLYGLYCOL ETHERS OF AROMATIC HYDROXY COMPOUNDS CONTAINING AT LEAST THREE ISOCYCLIC RINGS CORRESPONDING TO THE GENERAL FORMULA
Claim 2
Dependent Claim
17 words
POLYGLYCOL ETHERS OF AROMATIC HYDROXY COMPOUNDS CONTAINING AT LEAST THREE ISOCYCLIC RINGS CORRESPONDING TO THE GENERAL FORMULA
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) | 1956-03-02 | 1956-09-01 | 1957-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-02 | 1960-09-01 | 1961-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-02 | 1964-09-01 | 1965-03-03 | $7700.00 | Window Closed / Lapsed |