Patents Assigned to Nelson Research & Development
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Patent number: 4762549Abstract: The disclosure describes compositions and methods for improved delivery of plant growth regulators comprising contacting a plant with a composition comprising an effective amount of a plant growth regulator and an effective delivery enhancing amount of compound having the structural formula ##STR1## wherein R' is H or a lower alkyl group having 1-4 carbon atoms, m is 3-7, n is 0-17 and R is --CH.sub.3, ##STR2## where R" is H or halogen, with the proviso that if m is 3 and R is CH.sub.3, then n is 5-17.Type: GrantFiled: April 11, 1983Date of Patent: August 9, 1988Assignee: Nelson Research & Development Co.Inventor: Vithal J. Rajadhyaksha
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Patent number: 4755535Abstract: This invention provides compositions comprising a physiologically-active agent and an azacycloalkene having at least one double bond in the ring and of the general formula ##STR1## wherein X and Y, each, may represent sulfur, oxygen or two hydrogen atoms, A is a straight or branched chain, divalent aliphatic radical having from 0 to 2 double bonds; R' is selected from the group consisting of H, a lower alkyl group having 1-4 carbon atoms, phenyl, lower alkyl or halogen substituted phenyl, acetamido, halogen, piperidinyl, lower alkyl or halogen substituted piperidinyl, carbalkoxy, carboxamide, and alkylformyl; m is 3-7; q is 2m-2x, wherein x equals the number of double bonds in the lactam ring and may be 1, 2 or 3; and R is --CH.sub.3, ##STR2## wherein R" is H or halogen in an amount effective to enhance the penetration of the physiologically-active agent through the skin or other membrane of the body of an animal.Type: GrantFiled: April 23, 1986Date of Patent: July 5, 1988Assignee: Nelson Research & Development Co.Inventors: Gevork Minaskanian, James V. Peck
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Patent number: 4745640Abstract: A toilet seat cover is provided for preventing contact between the human buttocks and the toilet seat when the sheet is disposed and aligned with the toilet seat. A microbiocidal shield is created by the perspiration from the buttocks contacting a water-soluble oxidizing agent along with a water-soluble ene-diol compound dispersed as separate particles in the sheet. The water-soluble oxidizing agent and water-soluble ene-diol compound may be separately microencapsulated by a protective film. Capillary action of the fibers in the sheet provide for conducting free water released during reaction between the water-soluble oxidizing agent and the ene-diol compound throughout the toilet seat cover. Fibers of the sheet are adhesively bonded together within the adhesive that is soluble and dispersible in water to enable the toilet seat cover to be flushed down the toilet after use.Type: GrantFiled: April 27, 1987Date of Patent: May 24, 1988Assignee: Nelson Research & Development Co.Inventor: Eric L. Nelson
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Patent number: 4743618Abstract: Novel compounds useful as dopamine receptor agonists for the treatment of various diseases of the central nervous system such as Parkinson's disease and related disorders having the structural formula ##STR1## where R.sub.2, R.sub.3 and R.sub.4 are each selected from the group consisting of H, and OA; A is selected from the group consisting of hydrocarbyl radicals; ##STR2## where X is S or O: and pharmaceutically acceptable salts thereof. Also disclosed is a method for inducing a dopaminergic response in a patient by adminstering a pharmacologically-effective amount of one of the foregoing compounds.Type: GrantFiled: July 28, 1986Date of Patent: May 10, 1988Assignee: Nelson Research & Development Co.Inventor: Alan S. Horn
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Patent number: 4722933Abstract: The invention provides compounds represented by the general formula ##STR1## where R.sub.2, R.sub.3 and R.sub.4 are each selected from the group consisting of H, and OA; A is H or ##STR2## R.sub.5 is selected from the group consisting of alkyl and aromatic residues; n is 2 or 3; and R.sub.1 is selected from the group consisting ##STR3## wherein R.sub.6 is selected from the group consisting of halogen, hydrocarbyl and hetero atom-substituted hydrocarbyl, comprising from 1 to 12 carbon atoms and wherein said hetero-atoms are selected from the group consisting of halogen, nitrogen, oxygen, sulfur and phosphorus; R.sub.7 is R.sub.6 or H and m equals 1, 2 or 3; with the proviso that at least one of R.sub.2, R.sub.3 and R.sub.4 is H, that at least one of R.sub.2, R.sub.3 and R.sub.4 is not H and that R.sub.2 and R.sub.4 are not both OA; and pharmaceutically-acceptable salts thereof. The compounds are dopamine receptor agonists and useful for the treatment of glaucoma in mammals.Type: GrantFiled: March 17, 1986Date of Patent: February 2, 1988Assignee: Nelson Research & Development Co.Inventor: Alan S. Horn
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Patent number: 4657925Abstract: This invention provides a method for reducing the intraocular pressure in mammals which comprises administering an effective amount of a compound selected from the group consisting of compounds represented by the general formula: ##STR1## where R.sub.2, R.sub.3 and R.sub.4 are each selected from the group consisting of H, and OA; A is H or ##STR2## R.sub.5 is selected from the group consisting of alkyl and aromatic residues; n is 2 or 3; and R.sub.1 is selected from the group consisting of 3-hydroxyphenyl, 4-hydroxyphenyl, 3-pyridyl, 4-pyridyl, ##STR3## where X is S, O or NH, with the proviso that at least one of R.sub.2, R.sub.3 and R.sub.4 is H, that at least one of R.sub.2, R.sub.3 and R.sub.4 is not H and that R.sub.2 and R.sub.4 are not both OA; and pharmaceutically-acceptable salts thereof. This invention further provides compositions useful in such method of reducing the intraocular pressure in mammals.Type: GrantFiled: December 20, 1985Date of Patent: April 14, 1987Assignee: Nelson Research & Development Co.Inventor: Alan S. Horn
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Patent number: 4652573Abstract: Compounds having calcium channel antagonist activity of the formula: ##STR1## wherein R.sub.1 and R.sub.2 are each independently amino, trifluoromethyl, pentafluoroethyl, alkoxy, lower alkenyl, or lower alkynyl or branched or unbranched lower alkyl, which is unsubstituted or is substituted with cyano, hydroxy, acyloxy, hydrazino, lower alkyl amino, or di(lower alkyl)-amino or 5 or 6 membered saturated nitrogen-containing heterocyclic-1-yl, which is unsubstituted or is substituted with oxo, hydroxy, alkyl, and hydroxy (lower alkyl) R.sub.3 is straight- or branched-chain C.sub.1 to C.sub.12 alkyl, alkenyl, alkynyl, or cycloalkyl, and is either unsubstituted or substituted with hydroxy, acyloxy, cyano, di(lower alkyl) amino 5- or 6-membered saturated nitrogen-containing heterocyclic-1-yl or R.sub.3 is --A-R.sub.4, A is a straight- or branched-chain hydrocarbon moiety containing from 2 to 12 carbon atoms and from 0 to 2 double bonds, R.sub.4 is selected from the group consisting of: ##STR2## R.sub.Type: GrantFiled: March 14, 1985Date of Patent: March 24, 1987Assignee: Nelson Research & Development Co.Inventors: Gevork Minaskanian, Vithal J. Rajadhyaksha
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Patent number: 4591442Abstract: A flash chromatography apparatus and method for rapid, moderate-resolution separation of organic compounds. A solvent reservoir is pressurized with a gas, forcing solvent under pressure through tubing into and through a sorbent-packed chromatography column. More than one solvent reservoir may be provided to permit mixed-solvent elution. Alternatively, instead of pressurizing the solvent with compressed air, one or more metering pumps may be used to deliver solvent to the column. The method includes introducing a sample to be eluted into the top of a flash chromatography column, beginning elution by introducing an elution solvent under pressure into the top of the column, the elution solvent comprising a first solvent and a second solvent in a ratio from 0:1 to 1:0, modifying the elution solvent by varying the ratio of the first solvent to the second solvent, and continuing elution with the modified elution solvent.Type: GrantFiled: November 26, 1984Date of Patent: May 27, 1986Assignee: Nelson Research & Development Co.Inventor: Robert S. Andrews
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Patent number: 4581374Abstract: A method for sterilizing contact lenses and especially hydrophilic (soft) contact lenses comprising contacting a contact lens for a period of time sufficient to sterilize the lens with a substantially isotonic, aqueous composition having a pH between 6-9 comprising about 0.01 to about 0.3 percent by weight of an ene-diol compound and from about 0.1 to about 25 ppm copper ion. Preferred ene-diol compounds are dihydroxyfumaric acid and dihydroxymaleic acid.Type: GrantFiled: October 12, 1984Date of Patent: April 8, 1986Assignee: Nelson Research & Development Co.Inventors: Eric L. Nelson, Richard L. Harris
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Patent number: 4581379Abstract: A method for sterilizing contact lenses and especially hydrophilic (soft) contact lenses comprising contacting a contact lens for a period of time sufficient to sterilize the lens with a substantially isotonic, aqueous composition having a pH between 6-9 comprising about 0.01 to about 0.3 percent by weight of an ene-diol compound such as reductic acid and from about 0.1 to about 25 ppm copper ion.Type: GrantFiled: October 12, 1984Date of Patent: April 8, 1986Assignee: Nelson Research & Development Co.Inventors: Eric L. Nelson, Richard L. Harris
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Patent number: 4564628Abstract: Novel compounds useful as dopamine receptor agonists for the treatment of various diseases of the central nervous system such as Parkinson's disease and related disorders having the structural formula ##STR1## where R.sub.2, R.sub.3 and R.sub.4 are each selected from the group consisting of H, and OA; A is H or ##STR2## R.sub.5 is selected from the group consisting of alkyl and aromatic residues; n is 2 or 3; and R.sub.1 is selected from the group consisting of 3-hydroxyphenyl, 4-hydroxyphenyl, 3-pyridyl, 4-pyridyl, ##STR3## where X is S, O or NH; and pharmaceutically acceptable salts thereof. Also disclosed is a method for inducing a dopaminergic response in a patient by adminstering a pharmacologically-effective amount of one of the foregoing compounds.Type: GrantFiled: August 13, 1984Date of Patent: January 14, 1986Assignee: Nelson Research & Development Co.Inventor: Alan S. Horn
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Patent number: 4562196Abstract: A method for inducing an anticurare response by administering 2,4-diaminopyridine to a mammal is disclosed, together with pharmaceutical compositions containing an effective amount of 2,4-diaminopyridine either alone or in combination with an anticholinesterase agent. 2,4-Diaminopyridine is an antagonist of muscle relaxants used in anesthesiology and can increase neuromuscular transmission in certain disease states.Type: GrantFiled: April 6, 1984Date of Patent: December 31, 1985Assignee: Nelson Research & DevelopmentInventors: Alan S. Horn, Sandor Agoston
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Patent number: 4562075Abstract: In a method for administering systemically active agents including therapeutic agents through the skin or other body membranes of humans and animals typically in the form of a transdermal device or formulation, the improvement comprising the use therewith of an effective amount of a membrane penetration enhancer having the structural formula. ##STR1## wherein R is H or a lower alkyl group, m is 5-7 and n is 0-17.Type: GrantFiled: July 25, 1983Date of Patent: December 31, 1985Assignee: Nelson Research & Development Co.Inventor: Vithal J. Rajadhyaksha
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Patent number: 4540691Abstract: Compounds are disclosed having the formula: ##STR1## wherein: R.sub.1 is H, OH, --OCH.sub.3, --CH.sub.2 OH, --NH.sub.2, --NHMe, --NHEt, --NMe.sub.2, --NEt.sub.2, ##STR2## R.sub.2 is H, --CH.sub.3, or ##STR3## R.sub.3 is phenyl, benzyl, or 1-4 carbon alkyl; R.sub.4 is H, --CH.sub.3, --CH.sub.2 OH, --CH.sub.2 --CN, --CH.sub.2 --S--Me, CH.sub.2 --S--CN, or ##STR4## R.sub.5 is H, 1-4 carbon alkyl, alkenyl, or alkynyl, or aralkyl having a 1-4 carbon alkylene moiety; and A is --CH.sub.2 --or --CH.sub.2 CH.sub.2 --, and pharmaceutically-acceptable salts thereof. Pharmaceutical preparations using these compounds and a method for inducing a dopaminergic response by administering these compounds are also disclosed.Type: GrantFiled: April 13, 1984Date of Patent: September 10, 1985Assignee: Nelson Research & Development Co.Inventor: Alan S. Horn
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Patent number: 4525199Abstract: The disclosure describes a method for improved plant pest control comprising contacting a plant or plant pest with a composition comprising an effective amount of a plant pesticide and an effective delivery enhancing amount of compound having the structural formula ##STR1## wherein R' is H or a lower alkyl group having 1-4 carbon atoms, m is 3-7, n is 0-17 and R is --CH.sub.3, ##STR2## where R" is H or halogen, with the proviso that if m is 3 and R is CH.sub.3, then n is 5-17.Typical plant pesticides include insecticides, fungicides, herbicides, rodenticides, nematicides molluscicides and acaricides. The preferred penetration enhancing compound is 1-n-dodecylaza cycloheptan-2-one.Type: GrantFiled: October 13, 1981Date of Patent: June 25, 1985Assignee: Nelson Research & Development Co.Inventor: Vithal J. Rajakhyaksha
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Patent number: 4490389Abstract: A method for sterilizing contact lenses and especially hydrophilic (soft) contact lenses comprising contacting a contact lens for a period of time sufficient to sterilize the lens with a substantially isotonic, aqueous composition having a pH between about 6-9 comprising about 0.01 to about 0.3 percent by weight of an ene-diol compound and from about 0.1 to about 25 ppm copper ion. Preferred ene-diol compounds are ascorbic acid and dihydroxymaleic acid.Type: GrantFiled: June 13, 1983Date of Patent: December 25, 1984Assignee: Nelson Research & Development Co.Inventors: Eric L. Nelson, Richard L. Harris
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Patent number: 4465692Abstract: A method of selectively stimulating D-2 dopamine receptors in humans comprising administering to a human requiring D-2 dopamine receptor stimulation, a therapeutically effective amount of 2-(N-phenylethyl-N-propylamino)-5-hydroxytetralin or a pharmaceutically acceptable salt thereof.Type: GrantFiled: January 3, 1982Date of Patent: August 14, 1984Assignee: Nelson Research & Development CompanyInventor: Alan S. Horn
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Patent number: 4461638Abstract: The disclosure describes compositions and methods for improved delivery of plant nutrients comprising contacting a plant with a composition comprising an effective amount of a plant nutrient and an effective delivery enhancing amount of compound having the structural formula ##STR1## wherein R' is H or a lower alkyl group having 1-4 carbon atoms, m is 3-7, n is 0-17 and R is --CH.sub.3, ##STR2## where R" is H or halogen, with the proviso that if m is 3 and R is CH.sub.3, then n is 5-17.Type: GrantFiled: April 11, 1983Date of Patent: July 24, 1984Assignee: Nelson Research & Development CompanyInventor: Vithal J. Rajadhyaksha
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Patent number: 4446140Abstract: A method for treating mouth pain by administering to a human having such pain an effective mouth pain reducing amount of dextromethorphan, preferably as the hydrobromide.Type: GrantFiled: March 29, 1982Date of Patent: May 1, 1984Assignee: Nelson Research & Development CompanyInventor: Eric L. Nelson
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Patent number: 4444762Abstract: Compositions useful for carrying physiologically active agents such as therapeutic agents through skin and other body membranes comprising the agent and an effective, non-toxic amount of a compound having the structural formula ##STR1## wherein R' is H or a lower alkyl group, m is 3-7, N is 0-17 and R is --CH.sub.3, phenyl or substituted phenyl or ##STR2## with the proviso that if m is 3 and R is --CH.sub.3, then n is not 0-6.Type: GrantFiled: December 7, 1981Date of Patent: April 24, 1984Assignee: Nelson Research & Development CompanyInventor: Vithal J. Rajadhyaksha