US3476796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phthalic acid diester preparation
Assignee: KH Neochem Co Ltd
•
Filing: 1965-05-03
•
Granted: 1969-11-04
•
Expires: 1985-05-03
Abstract
No abstract record available.
Inventors
- 👤 Shiro Kudo
- 👤 Yoshihisa Mihara
- 👤 Taiichi Adachi
- 👤 Shinichi Tsurugi
- 👤 Tomoatsu Usuku
- 👤 Isamu Wada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:25
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/18; B01J19/1862; C; C07; C07C; C07C67/00; C07C67/08; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00074; B01J2219/00076; B01J2219/00081; B01J2219/00105; B01J2219/00159; B01J2219/00164; B01J2219/00182
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2759967A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-03 | 1973-05-05 | 1973-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-03 | 1977-05-05 | 1977-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-03 | 1981-05-05 | 1981-11-04 | $7700.00 | Window Closed / Lapsed |