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US3845201A Expired / Lapsed US ⏱️ 0.0 years remaining

Solid state ophthalmic medication delivery method

Assignee: Individual
•
Filing: 1972-04-24
•
Granted: 1974-10-29
•
Expires: 1992-04-24
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Abstract

Abstract 1. IN THE METHOD OF OBTAINING THE OPHTHALMIC PHARMACOLOGICAL EFFECT OF A MEDICAMENT COMPRISING INSERTING A COMPLETE OPHTHALMIC DISAGE OF MEDICAMENT IN SOLID FORM INTO THE CUL-DE-SAC OF THE EYE BETWEEN THE EYEBALL AND THE LID TO DISPENSE THE MEDICAMENT TO THE EYE OVER A PROLONGED PERIOD OF TIME, THE IMPROVEMENT BY MEANS OF WHICH THE CUL-DE-SAC IS LEFT FREE OF TEAR INSOLUBLE RESIDUE AFTER SAID MEDICAMENT IS DISPENSED, WHICH COMPRISES EMPLOYING A SOLID MATRIX OF A NON-IRRITATING PHARMACOLOGICALLY ACCEPTABLE POLYURONIC ACID OR CARBOXYMETHYLCELLULOSE SALT OF SAID MEDICAMENT, FREE FROM TEAR INSOLUBLE CARRIERS, SAID MATRIX ADAPTED TO FORM A GEL-MATRIX AFTER INSERTION INTO THE CULDE-SAC AND TO DISSOLVE COMPLETELY FOR SLOW RELEASE OF SAID DOSAGE.

Inventors

  • 👤 H Haddad
  • 👤 S Loucas

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 19:47
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/0012; A61K9/0048; A61K9/0051

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 114 words
IN THE METHOD OF OBTAINING THE OPHTHALMIC PHARMACOLOGICAL EFFECT OF A MEDICAMENT COMPRISING INSERTING A COMPLETE OPHTHALMIC DISAGE OF MEDICAMENT IN SOLID FORM INTO THE CUL-DE-SAC OF THE EYE BETWEEN THE EYEBALL AND THE LID TO DISPENSE THE MEDICAMENT TO THE EYE OVER A PROLONGED PERIOD OF TIME, THE IMPROVEMENT BY MEANS OF WHICH THE CUL-DE-SAC IS LEFT FREE OF TEAR INSOLUBLE RESIDUE AFTER SAID MEDICAMENT IS DISPENSED, WHICH COMPRISES EMPLOYING A SOLID MATRIX OF A NON-IRRITATING PHARMACOLOGICALLY ACCEPTABLE POLYURONIC ACID OR CARBOXYMETHYLCELLULOSE SALT OF SAID MEDICAMENT, FREE FROM TEAR INSOLUBLE CARRIERS, SAID MATRIX ADAPTED TO FORM A GEL-MATRIX AFTER INSERTION INTO THE CULDE-SAC AND TO DISSOLVE COMPLETELY FOR SLOW RELEASE OF SAID DOSAGE.
Claim 2
Dependent Claim 114 words
IN THE METHOD OF OBTAINING THE OPHTHALMIC PHARMACOLOGICAL EFFECT OF A MEDICAMENT COMPRISING INSERTING A COMPLETE OPHTHALMIC DISAGE OF MEDICAMENT IN SOLID FORM INTO THE CUL-DE-SAC OF THE EYE BETWEEN THE EYEBALL AND THE LID TO DISPENSE THE MEDICAMENT TO THE EYE OVER A PROLONGED PERIOD OF TIME, THE IMPROVEMENT BY MEANS OF WHICH THE CUL-DE-SAC IS LEFT FREE OF TEAR INSOLUBLE RESIDUE AFTER SAID MEDICAMENT IS DISPENSED, WHICH COMPRISES EMPLOYING A SOLID MATRIX OF A NON-IRRITATING PHARMACOLOGICALLY ACCEPTABLE POLYURONIC ACID OR CARBOXYMETHYLCELLULOSE SALT OF SAID MEDICAMENT, FREE FROM TEAR INSOLUBLE CARRIERS, SAID MATRIX ADAPTED TO FORM A GEL-MATRIX AFTER INSERTION INTO THE CULDE-SAC AND TO DISSOLVE COMPLETELY FOR SLOW RELEASE OF SAID DOSAGE.

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) 1977-10-28 1978-04-29 1978-10-29 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-10-28 1982-04-29 1982-10-29 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-10-28 1986-04-29 1986-10-29 $7700.00 Window Closed / Lapsed

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