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US3845033A Expired / Lapsed US ⏱️ 0.0 years remaining

Complexes of double-stranded ribonucleic acid with polyquaternary amine

Assignee: Beecham Group PLC
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Filing: 1972-11-06
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Granted: 1974-10-29
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Expires: 1992-11-06
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Abstract

Abstract WHEREIN EACH OF A AND B, INDEPENDENT OF THE OTHER IS AN INTEGER OF FROM 2 TO 6 AND X IS A NUMBER WHICH IS SUCH THAT THE AVERAGE MOLECULAR WEIGHT OF THE POLYCATION DIVIDED BY THE EQUIVALENT WEIGHT WHICH IS THE MOLECULAR WEIGHT OF THE POLYCATION DIVIDED BY THE VALUE (2X + 2) IS NOT GREATER THAN 98, AND THE ANIONS ARE EITHER (A) DOUBLESTRANDED RIBONUCLEIC ACID POLYANIONS, SAID DOUBLE-STRANDED RIBOUCLEIC ACID BEING OF NATURAL ORIGIN, OR )B) POLYANIONS OF A DOUBLE-STRANDED RIBONUCLEIC ACID OF NATURAL ORIGIN WHICH HAS BEEN SUBJECT TO CHEMICAL OR ENZYMATIC REACTION WHICH ALTERS THE PRIMARY AND/OR SECONDARY AND/OR TERTIARY STRUCTURE, PROVIDED THAT THE RESULTANT RIBONUCLEIC ACID RETAINS A SUBSTANTIAL DEGREE OF BASE PAIRING BETWEEN COMPLEMENTARY STRANDS, SAID ANTIVIRAL COMPLEX HAVING MORE THAN 60% OF THE ANIONIC SITES ON THE DOUBLE-STRANDED RIBOUNCLIC ACID ANIONS NEUTRALIZED BY THE QUATERNARY CATIONIC SITES ON THE QUATERNARY POLYMER. 1. AN ANTIVIRAL COMPLEX WHICH IS A PRINCIPALLY IONIC COMPLEX SOLUBLE IN 0.15 M AQUEOUS SODIUM CHLORIDE SOLUTION IN WHICH THE CATIONS ARE ORGAIC POLYMER POLYCATION HAVING A PLURALITY OF QUATERNARY NITROGEN SITES LOCATED AT INTERVALS ALONG THE POLYMER CHAINS, SAID POLYCATIONS HAVING THE FORMULA (H3C)2-N-(CH2)A-(N(+)(-CH3)2-(CH2)B-N(-CH3)2-(CH2)A)X- N(-CH3)2

Inventors

  • 👤 M Harnden

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 18:16
CPC Classifications
C; C07; C07H; C07H21/00; A; A61; A61K; A61K31/00; A61K31/74; A61K31/785; A61P; A61P31/00; A61P31/12

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 44 words
AN ANTIVIRAL COMPLEX WHICH IS A PRINCIPALLY IONIC COMPLEX SOLUBLE IN 0.15 M AQUEOUS SODIUM CHLORIDE SOLUTION IN WHICH THE CATIONS ARE ORGAIC POLYMER POLYCATION HAVING A PLURALITY OF QUATERNARY NITROGEN SITES LOCATED AT INTERVALS ALONG THE POLYMER CHAINS, SAID POLYCATIONS HAVING THE FORMULA
Claim 2
Dependent Claim 44 words
AN ANTIVIRAL COMPLEX WHICH IS A PRINCIPALLY IONIC COMPLEX SOLUBLE IN 0.15 M AQUEOUS SODIUM CHLORIDE SOLUTION IN WHICH THE CATIONS ARE ORGAIC POLYMER POLYCATION HAVING A PLURALITY OF QUATERNARY NITROGEN SITES LOCATED AT INTERVALS ALONG THE POLYMER CHAINS, SAID POLYCATIONS HAVING THE FORMULA

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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