US2582265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic resins from natural polyhydroxy phenols
Assignee: Standard Dyewood Co
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Filing: 1950-07-14
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Granted: 1952-01-15
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Expires: 1970-07-14
Abstract
No abstract record available.
Inventors
- 👤 Monroe Kenneth Potter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:28
CPC Classifications
C; C07; C07D; C07D311/00; C07D311/02; C07D311/04; C07D311/58; C07D311/60; C07D311/62; C08; C08G; C08G16/00; C08G16/02; C08G16/0212; C08G16/0218; C08G8/00; C08G8/04; C08G8/08; C08G8/18
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
27 words
AS A NEW COMPOSITION OF MATTER, A CARBOXYALKYL ARALKYL ETHER OF A CATECHOL TYPE OF TANNING AGENT, THE CARBOXY-ALKYL GROUP THEREOF CONTAINING TWO TO THREE CARBON ATOMS.
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) | 1955-01-14 | 1955-07-16 | 1956-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-14 | 1959-07-16 | 1960-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-14 | 1963-07-16 | 1964-01-15 | $7700.00 | Window Closed / Lapsed |