US2335012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High boiling compounds and method of preparing them
Assignee: Arthur D Little Inc
•
Filing: 1941-10-15
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Granted: 1943-11-23
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Expires: 1961-10-15
Abstract
No abstract record available.
Inventors
- 👤 Lotte H Johnston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:36
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/04; C07F7/06; Y; Y10; Y10S; Y10S236/00; Y10S236/11
Claims Analysis
Total Claims: 0
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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) | 1946-11-22 | 1947-05-24 | 1947-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-11-22 | 1951-05-24 | 1951-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-11-22 | 1955-05-24 | 1955-11-23 | $7700.00 | Window Closed / Lapsed |