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US3686412A Expired / Lapsed US ⏱️ 0.0 years remaining

Compositions containing bis-chromonyl compounds for inhibiting antigen-antibody reactions

Assignee: Individual
•
Filing: 1970-10-02
•
Granted: 1972-08-22
•
Expires: 1990-10-02
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Abstract

Abstract Pharmaceutical compositions comprising a pharmaceutical carrier and a bis-chromonyl compound of the formula AND THERAPEUTICALLY ACCEPTABLE SALTS, ESTERS AND AMIDES THEREOF, IN WHICH R1, R2, R3, R4, R5 and R6 are each selected from the group consisting of hydrogen, halogen, hydroxy, lower alkyl, lower alkoxy, hydroxyloweralkyl, haloloweralkyl, hydroxyloweralkoxy, loweralkoxyloweralkoxy and carboxyloweralkoxy; and X is selected from the group consisting of saturated and unsaturated, straight and branched hydrocarbon chains which may be interrupted by a member selected from the group consisting of benzene rings, dioxanyl, oxygen atoms and carbonyl groups, and which may be substituted by a member selected from the group consisting of halogen atoms, hydroxy groups and lower alkoxy groups are active to inhibit antigenantibody reaction.

Inventors

  • 👤 Colin Fitzmaurice
  • 👤 Thomas Brian Lee

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 19:37
CPC Classifications
C; C07; C07D; C07D311/00; C07D311/02; C07D311/04; C07D311/22; C07D311/24; C07C; C07C45/00; C07C45/61; C07C45/67; C07C45/673; C07C45/68; C07C45/70; C07C45/71; C07D311/06; C07D311/08; C07D311/16

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 17 words
A composition according to claim 1 wherein the bis-chromonyl compound is in the form of a salt.
Claim 2
Dependent Claim 14 words
A composition according to claim 1 in a form suitable for administration by inhalation.
Claim 3
Dependent Claim 18 words
A pharmaceutical composition according to claim 1 comprising a solution or suspension of the active ingredient in water.
Claim 4
Dependent Claim 14 words
A pharmaceutical composition according to claim 1 in the form of an aerosol formulation.
Claim 5
Dependent Claim 17 words
A pharmaceutical composition according to claim 1, comprising the solid active ingredient diluted with a solid diluent.
Claim 6
Dependent Claim 34 words
A pharmaceutical composition in dosage unit form which comprises a pharmaceutical carrier and from one to 50 milligrams of 1,3-bis(2-carboxy-chromon-5-yloxy)-2-hydroxypropane or a therapeutically acceptable ammonium, alkali metal, alkaline earth metal or amine salt thereof.
Claim 7
Independent Claim 38 words
A method for inhibiting the effects of the antigen-antibody reaction which comprises administering to the patient, per dose, 1 to 50 milligrams of 1,3-bis(2-carboxy-chromon-5-yloxy)-2-hydroxypropane or a therapeutically acceptable ammonium, alkali metal, alkaline earth metal or amine salt thereof.
Claim 8
Independent Claim 36 words
A method for the prophylactic treatment of asthma which comprises administering to the patient, per dose, 1 to 50 milligrams of 1,3-bis(2-carboxy-chromon-5-yloxy)-2-hydroxypropane or a therapeutically acceptable ammonium, alkali metal, alkaline earth metal or amine salt thereof.
Claim 9
Dependent Claim 18 words
A method according to claim 9 wherein the bis-chromonyl compound is employed in the form of a salt.

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) 1975-08-22 1976-02-21 1976-08-22 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-08-22 1980-02-21 1980-08-22 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-08-22 1984-02-21 1984-08-22 $7700.00 Window Closed / Lapsed

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