US2568426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Condensation products from polyethylenic-unsaturated aldehyde adducts, derivatives thereof, and methods for producing the same
Assignee: Shell Development Co
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Filing: 1949-06-06
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Granted: 1951-09-18
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Expires: 1969-06-06
Abstract
No abstract record available.
Inventors
- 👤 Richard R Whetstone
- 👤 William J Raab
- 👤 Seaver A Ballard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:26
CPC Classifications
C; C08; C08G; C08G2/00; C08G2/18; C08G16/00; C08G16/02; C08G16/0212; C08G16/0218; C08G16/0237; C08G16/0293; C08G16/04; C08G2/22; C08G2/30; C08G2/32
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
59 words
AN ESTER CONDENSATION PRODUCT OBTAINED BY TREATING AN ADDITION PRODUCT OF AN ALPHA,BETAETHYLENICALLY UNSATURATED ALIPHATIC ALDEHYDE CONTAINING FROM 3 TO 12 CARBON ATOMS AND A DRYING OIL THE ACID RESIDUE OF WHICH CONTAINS AT LEAST 30% POLYETHYLENIC ACIDS HAVING AT LEAST TWO ETHYLENIC LINKAGES IN CONJUGATED RELATIONSHIP, WITH FROM 0.01% TO 5% BY WEIGHT OF AN ALUMINUM LOWER ALKOXIDE.
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) | 1954-09-17 | 1955-03-19 | 1955-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-17 | 1959-03-19 | 1959-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-17 | 1963-03-19 | 1963-09-18 | $7700.00 | Window Closed / Lapsed |