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US3493652A Expired / Lapsed US ⏱️ 0.0 years remaining

Controlled release medicament

Assignee: CHARLES W HARTMAN
•
Filing: 1962-09-14
•
Granted: 1970-02-03
•
Expires: 1982-09-14
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Abstract

No abstract record available.

Inventors

  • 👤 Charles W Hartman

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 15:16
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.

References Cited (Backward Citations)

US650760A Cited
US671804A Cited
US1546820A Cited
US2801203A Cited
US2906621A Cited
US2878123A Cited
US2887435A Cited
US2891868A Cited
US2924521A Cited
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US3181998A Cited
US3081225A Cited

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

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