US2213477A
Expired / Lapsed
US
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Glycol and polyglycol ethers of isocyclic hydroxyl compounds
Assignee: GAF Chemicals Corp
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Filing: 1936-11-18
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Granted: 1940-09-03
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Expires: 1956-11-18
Abstract
No abstract record available.
Inventors
- 👤 Steindorff Adolf
- 👤 Balle Gerhard
- 👤 Horst Karl
- 👤 Michel Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:14
CPC Classifications
C; C07; C07C; C07C43/00; C07C43/02; C07C43/20; C07C43/23; B; B01; B01D; B01D19/00; B01D19/02; B01D19/04; C09; C09G; C09G1/00; C09G1/06; C09G1/14; C09K; C09K23/00; C09K23/42; Y; Y10; Y10S; Y10S516/00; Y10S516/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-09-03 | 1944-03-04 | 1944-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-09-03 | 1948-03-04 | 1948-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-09-03 | 1952-03-04 | 1952-09-03 | $7700.00 | Window Closed / Lapsed |