Patent US2729650A successfully refreshed from Google Patents.
US2729650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of dialdehydes and derivatives thereof
Assignee: BP PLC
•
Filing: 1951-03-10
•
Granted: 1956-01-03
•
Expires: 1971-03-10
Abstract
No abstract record available.
Inventors
- 👤 Habeshaw John
- 👤 Geach Charles John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:38
CPC Classifications
C; C07; C07D; C07D319/00; C07D319/04; C07D319/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
A PROCESS FOR THE PRODUCTION OF DERIVATIVES OF DIALDEHYDIC ORGANIC COMPOUNDS COMPRISING REACTING A CYCLIC ACETAL SELECTED FROM THE GROUP CONSISTING OF A COMPOUND HAVING THE FORMULAS
Claim 2
Dependent Claim
27 words
A PROCESS FOR THE PRODUCTION OF DERIVATIVES OF DIALDEHYDIC ORGANIC COMPOUNDS COMPRISING REACTING A CYCLIC ACETAL SELECTED FROM THE GROUP CONSISTING OF A COMPOUND HAVING THE FORMULAS
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) | 1959-01-02 | 1959-07-04 | 1960-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-02 | 1963-07-04 | 1964-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-02 | 1967-07-04 | 1968-01-03 | $7700.00 | Window Closed / Lapsed |