US3324176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyalkylene glycol ethers containing terminal urea groups
Assignee: Bayer AG
•
Filing: 1963-10-15
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Granted: 1967-06-06
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Expires: 1983-10-15
Abstract
No abstract record available.
Inventors
- 👤 Kirschnek Helmut
- 👤 Finck George Von
- 👤 Quaedvlieg Mathieu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:22
CPC Classifications
C; C07; C07C; C07C275/00; C07C275/04; C07C275/06; C07C275/14; C08; C08G; C08G59/00; C08G59/14; C08G59/1494; C08G59/18; C08G59/20; C08G59/22; C08G59/28; C08G65/00; C08G65/02; C08G65/04; C08G65/26; C08G65/32; C08G65/329; C08G65/333; C08G65/33303; C08G65/33306; C08G65/33396; C08G65/338
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
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) | 1970-06-05 | 1970-12-05 | 1971-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-05 | 1974-12-05 | 1975-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-05 | 1978-12-05 | 1979-06-06 | $7700.00 | Window Closed / Lapsed |