US2816062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroxyethyl cellulose tablet coating
Assignee: University of Illinois at Urbana-Champaign
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Filing: 1954-05-27
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Granted: 1957-12-10
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Expires: 1974-05-27
Abstract
No abstract record available.
Inventors
- 👤 Dale W Doerr
- 👤 Earl R Serles
- 👤 Dwight L Deardorff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:36
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/20; A61K9/28; A61K9/2886; A61K9/2806; A61K9/282; A61K9/2833; A61K9/286; A61K9/2866
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
A MEDICAL TABLET RESISTANT TO ABRASION AND HIGH TEMPERATURES AND HIGH HUMIDITY COMPRISING A TABLET BODY HAVING A THIN COAT HAVING A COMPOSITION CONSISTING ESSENTIALLY OF HYDROXYETHYL CELLULOSE, AND COATED TABLET HAVING ESSENTIALLY THE CONFIGURATION OF THE BASIC TABLET.
Claim 2
Dependent Claim
39 words
A MEDICAL TABLET RESISTANT TO ABRASION AND HIGH TEMPERATURES AND HIGH HUMIDITY COMPRISING A TABLET BODY HAVING A THIN COAT HAVING A COMPOSITION CONSISTING ESSENTIALLY OF HYDROXYETHYL CELLULOSE, AND COATED TABLET HAVING ESSENTIALLY THE CONFIGURATION OF THE BASIC TABLET.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-09 | 1961-06-10 | 1961-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-09 | 1965-06-10 | 1965-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-09 | 1969-06-10 | 1969-12-10 | $7700.00 | Window Closed / Lapsed |