Patent US3493407A successfully refreshed from Google Patents.
US3493407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of medicinal capsules from hydroxyalkylcellulose ethers
Assignee: Dow Chemical Co
•
Filing: 1967-05-26
•
Granted: 1970-02-03
•
Expires: 1987-05-26
Abstract
No abstract record available.
Inventors
- 👤 George K Greminger Jr
- 👤 Lewis E Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:27
CPC Classifications
C; C08; C08L; C08L1/00; C08L1/08; C08L1/26; C08L1/28; C08L1/284; A; A61; A61J; A61J3/00; A61J3/07; A61J3/071; A61J3/077; A61K; A61K9/00; A61K9/48; A61K9/4816; C08B; C08B11/00; C08B11/02; C08B11/04; C08B11/193; C09; C09D; C09D101/00; C09D101/08; C09D101/26; C09D101/28; C09D101/284; Y; Y10; Y10S; Y10S206/00; Y10S206/828
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) | 1973-02-02 | 1973-08-04 | 1974-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-02 | 1977-08-04 | 1978-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-02 | 1981-08-04 | 1982-02-03 | $7700.00 | Window Closed / Lapsed |