Patent US2470450A successfully refreshed from Google Patents.
Patent US3375289A successfully refreshed from Google Patents.
US3375289A
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Method for preparation of divinylbenzenes
Assignee: NAUCHNO-ISSLEDOVATELSKY INSTITUTE SINTETICHESKIKH SPIRTOV I ORGANICHESKIKH PRODUKTOV
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Filing: 1965-01-12
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Granted: 1968-03-26
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Expires: 1985-01-12
Abstract
No abstract record available.
Inventors
- 👤 Khchejan Khachik Egorovich
- 👤 Jakovich Ninel Josifovna
- 👤 Pavlichev Alexei Fedorovich
- 👤 Izrael Larisa Borisovna
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:51
CPC Classifications
C; C07; C07C; C07C49/00; C07C49/76; C07C1/00; C07C1/20; C07C1/24; C07C15/00; C07C15/40; C07C15/42; C07C15/44; C07C29/00; C07C29/132; C07C29/136; C07C29/143; C07C45/00; C07C45/27; C07C45/29; C07C45/32; C07C45/33; C07C45/34; C07C45/36; C07C2521/00; C07C2521/02; C07C2521/04; C07C2527/00; C07C2527/02; C07C2527/053; Y; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/93; Y10S585/932; Y10S585/934
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1179408A
Cited
US2468759A
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US2465486A
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US2588123A
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US2634302A
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US3248344A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-26 | 1971-09-25 | 1972-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-26 | 1975-09-25 | 1976-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-26 | 1979-09-25 | 1980-03-26 | $7700.00 | Window Closed / Lapsed |