Patent US3493652A successfully refreshed from Google Patents.
US3493652A
Expired / Lapsed
US
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Controlled release medicament
Assignee: CHARLES W HARTMAN
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Filing: 1962-09-14
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Granted: 1970-02-03
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Expires: 1982-09-14
Abstract
No abstract record available.
Inventors
- 👤 Charles W Hartman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:41
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/0012; A61K9/0034; A61K47/00; A61K47/46; A61K9/02; A61K9/20; A61K9/2004; A61K9/2068
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A CONTROLLED-RELEASE SOLID, OR LIQUID ORAL, TOPICAL, SUBLINGUAL, PARENTERAL, IMPLANTABLE, RECTAL OR VAGINAL DOSAGE FORM WHICH CONSISTS, IN A HOMOGENOUS DISTRIBUTION THROUGHOUT THE DOSAGE FORM ESSTIALLY OF : (A) A THERAPEUTIC ORAL, TOPICAL, SUBLINGUAL, PARENTERAL, IMPLANTABLE DOSAGE UNIT QUANTITY OF A NON-ENZYMATIC MEDICAMENT, (B) AN ENZYME-LABILE PHARMACEUTICAL CARBOHYDRATE, LIPID OR PROTEIN VEHICULAR SUBSTRATE WHICH RETAINS THE MEDICAMENT AND PREVENTS OR RETARDS ITS RELEASE UNTIL SEPARATED FROM THE MEDICAMENT, AND (C) A PRE-SELECTED ENZYME, OR MIXTURES THEREOF, FOR DIGESTING SAID CARBOHYDRATE, LIPID, OR PROTEIN VEHICULAR SUBSTRATE, SAID ENZYME OR MIXTURE THEREOF BEING PRESENT IN A PREDERERMINED AMOUNT, SUFFICIENT TO EFFECT DIGESTION BY IN-VITRO GASTRIC AND/OR INTESTINAL FLUID, OR BY IN-VITRO SUBLINGUAL DISINTEGRATION, OR BY OTHER BODY FLUIDS OF SAID SUBSTRATE AND THEREBY TO CONTROL THE IN-VIV/ RELEASE OF SAID MEDICAMENT AT A PREDETERMINED RATE.
Claim 2
Dependent Claim
133 words
A CONTROLLED-RELEASE SOLID, OR LIQUID ORAL, TOPICAL, SUBLINGUAL, PARENTERAL, IMPLANTABLE, RECTAL OR VAGINAL DOSAGE FORM WHICH CONSISTS, IN A HOMOGENOUS DISTRIBUTION THROUGHOUT THE DOSAGE FORM ESSTIALLY OF : (A) A THERAPEUTIC ORAL, TOPICAL, SUBLINGUAL, PARENTERAL, IMPLANTABLE DOSAGE UNIT QUANTITY OF A NON-ENZYMATIC MEDICAMENT, (B) AN ENZYME-LABILE PHARMACEUTICAL CARBOHYDRATE, LIPID OR PROTEIN VEHICULAR SUBSTRATE WHICH RETAINS THE MEDICAMENT AND PREVENTS OR RETARDS ITS RELEASE UNTIL SEPARATED FROM THE MEDICAMENT, AND (C) A PRE-SELECTED ENZYME, OR MIXTURES THEREOF, FOR DIGESTING SAID CARBOHYDRATE, LIPID, OR PROTEIN VEHICULAR SUBSTRATE, SAID ENZYME OR MIXTURE THEREOF BEING PRESENT IN A PREDERERMINED AMOUNT, SUFFICIENT TO EFFECT DIGESTION BY IN-VITRO GASTRIC AND/OR INTESTINAL FLUID, OR BY IN-VITRO SUBLINGUAL DISINTEGRATION, OR BY OTHER BODY FLUIDS OF SAID SUBSTRATE AND THEREBY TO CONTROL THE IN-VIV/ RELEASE OF SAID MEDICAMENT AT A PREDETERMINED RATE.
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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 |