US2064359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microbiological preparation of 2.3-butylene glycol
Assignee: DSM Delft BV
•
Filing: 1933-11-06
•
Granted: 1936-12-15
•
Expires: 1953-11-06
Abstract
No abstract record available.
Inventors
- 👤 Scheffer Marinus Adrianus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:37
CPC Classifications
C; C12; C12P; C12P7/00; C12P7/02; C12P7/04; C12P7/18; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/828
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1939-12-15 | 1940-06-15 | 1940-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-12-15 | 1944-06-15 | 1944-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-12-15 | 1948-06-15 | 1948-12-15 | $7700.00 | Window Closed / Lapsed |