Patents by Inventor James H. Ludens
James H. Ludens has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 5844091Abstract: Methods for diagnosing pre-hypertension, hypertension, congestive cardiomyopathy, renal failure, salt-sensitivity and adenomas and endocrine cell hyperplasias are disclosed. Also disclosed are methods for monitoring hypertension therapy, congestive cardiomyopathy therapy, renal failure therapy and adenoma and endocrine cell hyperplasia therapy. These methods involve using an antibody having binding specificity to ouabain to immunologically measure the level of human ouabain in body fluid or tissue of a subject. Additionally, methods for treating a hypertensive subject by inducing passive or active immunity to human ouabain in the subject are disclosed, along with an antibody having binding specificity for ouabain.Type: GrantFiled: June 25, 1993Date of Patent: December 1, 1998Assignee: University of Maryland, BaltimoreInventors: Mordecai P. Blaustein, John M. Hamlyn, Douglas W. Harris, James H. Ludens, William Rodney Mathews, Jed F. Fisher, Frederic Mandel, Donald W. DuCharme
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Patent number: 5695756Abstract: Methods for diagnosing pre-hypertension, hypertension, congestive cardiomyopathy, renal failure, salt-sensitivity and adenomas and endocrine cell hyperplasias are disclosed. Also disclosed are methods for monitoring hypertension therapy, congestive cardiomyopathy therapy, renal failure therapy and adenoma and endocrine cell hyperplasia therapy. These methods involve using an antibody having binding specificity to ouabain to immunologically measure the level of human ouabain in body fluid or tissue of a subject. Additionally, methods for treating a hypertensive subject by inducing passive or active immunity to human ouabain in the subject are disclosed, along with an antibody having binding specificity for ouabain.Type: GrantFiled: June 6, 1995Date of Patent: December 9, 1997Assignee: University of Maryland at BaltimoreInventors: Mordecai P. Blaustein, John M. Hamlyn, Douglas W. Harris, James H. Ludens, William Rodney Mathews, Jed F. Fisher, Frederic Mandel, Donald W. DuCharme
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Patent number: 5668157Abstract: Cyanoguanidine compounds of formula (I) and its pharmaceutically acceptable acid addition salts wherein R.sub.1 is hydrogen or methyl; R.sub.2 is C.sub.1 -C.sub.6 alkyl, C.sub.2 -C.sub.6 alkenyl, C.sub.2 -C.sub.6 alkynyl, C.sub.3 -C.sub.5 cycloalkyl, C.sub.3 -C.sub.5 cycloalkenyl hydroxy methyl, methoxy-C.sub.1 -C.sub.5 alkyl, or R.sub.1 and R.sub.2 are combined to form a C.sub.3 -C.sub.6 carbocyclic ring; R.sub.3 and R.sub.4 are each independently selected to be hydrogen, C.sub.1 -C.sub.4 alkyl, F, Cl, Br, I or CF.sub.3 ; R.sub.5 is hydrogen, F or Cl; R.sub.6 is hydrogen, --NH.sub.2, --NHCH.sub.3, --NHC.sub.2 H.sub.5, --NHCH(CH.sub.3).sub.2, --N(CH.sub.3).sub.2, --N(C.sub.2 H.sub.5).sub.2, NH(CH.sub.2).sub.m, --OC.sub.1 -C.sub.3 alkyl (where m is 2 or 3), --NHC(O)C.sub.1 -C.sub.3 alkyl, Cl or Br; and n is 0 or 1. The compounds of formula (I) are potassium channel blockers useful in the treatment of cardiovascular disorders such as congestive heart failure and hypertension and as a diuretic.Type: GrantFiled: June 25, 1996Date of Patent: September 16, 1997Assignee: Pharmacia & Upjohn CompanyInventors: Stephen J. Humphrey, Kaushik D. Meisheri, James H. Ludens, Jackson B. Hester, Jr.
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Patent number: 5633374Abstract: Pyrimidine-cyanoguanidine compounds of Formula I and its pharmaceutically acceptable acid addition salts ##STR1## wherein R.sub.1 is hydrogen or methyl;R.sub.2 is C.sub.1 -C.sub.6 alkyl, C.sub.2 -C.sub.6 alkenyl, C.sub.2 -C.sub.6 alkynyl, C.sub.3 -C.sub.5 cycloalkyl, C.sub.3 -C.sub.5, hydroxy methyl, cycloalkyl methoxy-C.sub.1 -C.sub.5 alkyl, or R.sub.1 and R.sub.2 are combined to form a C.sub.3 -C.sub.6 carbocyclic ring;R.sub.3 and R.sub.4 are each independently selected to be hydrogen, C.sub.1 -C.sub.4 alkyl, F, Cl, Br, I or CF.sub.3 ;R.sub.5 is hydrogen, F or Cl;R.sub.6 is hydrogen, --NH.sub.2, --NHCH.sub.3, --NHC.sub.2 H.sub.5, --NHCH(CH.sub.3) .sub.2, --N(CH.sub.3).sub.2, --N(C.sub.2 H.sub.5).sub.2, NH(CH.sub.2).sub.m --OC.sub.1 --C.sub.3 alkyl (where m is 2 or 3), --NHC(O)C.sub.1 -C.sub.3 alkyl, Cl or Br; and n is 0 or 1.The compounds of Formula I are potassium channel blockers useful in the treatment of cardiovascular disorders such as congestive heart failure and hypertension and as a diuretic.Type: GrantFiled: November 20, 1995Date of Patent: May 27, 1997Assignee: The Upjohn CompanyInventors: Stephen J. Humphrey, Kaushik D. Meisheri, James H. Ludens, Jackson B. Hester, Jr.
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Patent number: 5567722Abstract: Cyanoguanidine compounds of Formula I and its pharmaceutically acceptable acid addition salts ##STR1## wherein R.sub.1 is hydrogen or methyl;R.sub.2 is C.sub.1 -C.sub.6 alkyl, C.sub.2 -C.sub.6 alkenyl, C.sub.2 -C.sub.6 alkynyl, C.sub.3 -C.sub.5 cycloalkyl, C.sub.3 -C.sub.5 cycloalkenyl hydroxy methyl, methoxy-C.sub.1 -C.sub.5 alkyl, or R.sub.1 and R.sub.2 are combined to form a C.sub.3 -C.sub.6 carbocyclic ring;R.sub.3 and R.sub.4 are each independently selected to be hydrogen, C.sub.1 -C.sub.4 alkyl, F, Cl, Br, I or CF.sub.3 ;R.sub.5 is hydrogen, F or Cl;R.sub.6 is hydrogen, --NH.sub.2, --NHCH.sub.3, --NHC.sub.2 H.sub.5, --NHCH(CH.sub.3).sub.2, --N(CH.sub.3).sub.2, --N(C.sub.2 H.sub.5).sub.2, NH(CH.sub.2).sub.m -- OC.sub.1 -C.sub.3 alkyl (where m is 2 or 3), --NHC(O)C.sub.1 -C.sub.3 alkyl, Cl or Br; and n is 0 or 1.The compounds of Formula I are potassium channel blockers useful in the treatment of cardiovascular disorders such as congestive heart failure and hypertension and as a diuretic.Type: GrantFiled: February 6, 1995Date of Patent: October 22, 1996Assignee: The Upjohn CompanyInventors: Stephen J. Humphrey, Kaushik D. Meisheri, James H. Ludens, Jackson B. Hester, Jr.
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Patent number: 5429928Abstract: Methods using an antibody having binding specificity to ouabain to immunologically measure the level of human ouabain in body fluid or tissue of a subject are disclosed.Type: GrantFiled: July 28, 1992Date of Patent: July 4, 1995Assignee: University of Maryland at BaltimoreInventors: Mordecai P. Blaustein, John M. Hamlyn, Douglas W. Harris, James H. Ludens, William R. Mathews, Jed F. Fisher, Frederic Mandel, Donald W. DuCharme
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Patent number: 5164296Abstract: Methods for diagnosing pre-hypertension, hypertension, congestive cardiomyopathy, renal failure, salt-sensitivity and adenomas and endocrine cell hyperplasias are disclosed. Also disclosed are methods for monitoring hypertension therapy, congestive cardiomyopathy therapy, renal failure therapy and adenoma and endocrine call hyperplasia therapy. These methods involve using an antibody having binding specificity to ouabain to immunologically measure the level of human ouabain in body fluid or tissue of a subject. Additionally, methods for treating a hypertensive subject by inducing passive or active immunity to human ouabain in the subject are disclosed, along with an antibody having binding specificity for ouabain.Type: GrantFiled: August 31, 1990Date of Patent: November 17, 1992Assignee: University of Maryland at BaltimoreInventors: Mordecai P. Blaustein, John M. Hamlyn, Douglas W. Harris, James H. Ludens, William R. Mathews, Jed F. Fisher, Frederic Mandel, Donald W. DuCharme
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Patent number: 4689413Abstract: Triazolo-benzodiazepine-1-ethanamines of the formulas ##STR1## where R, R.sub.1, R.sub.2, R.sub.3, R.sub.4 and Ring A are as defined in the specification, e.g., 8-chloro-N,N-dimethyl-.beta.,6-diphenyl-4H-[1,2,4]triazolo[4,3-a][1,4]benz odiazepine-1-ethanamine, and pharmacologically acceptable salts thereof, have been found to have substantial diuretic, natriuretic, but little, if any, kaliuretic activity, which can be used alone, or concomittently with other diuretic drugs such as furosemide or hydrochlorothiazide and/or with antihypertensive agents such as propranolol, captopril, minoxidil, prazosin, guanadrel sulfate, whose actions are supplemented by the action of a diuretic drug.Type: GrantFiled: January 31, 1985Date of Patent: August 25, 1987Assignee: The Upjohn CompanyInventors: Jackson B. Hester, Jr., James H. Ludens
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Patent number: 4514407Abstract: Triazolo-benzodiazepine-1-ethanamines of the formulas ##STR1## where R, R.sub.1, R.sub.2, R.sub.3, R.sub.4 and Ring A are as defined in the specification, e.g., 8-chloro-N,N-dimethyl-.beta.,6-diphenyl-4H-[1,2,4]triazolo[4,3-a][1,4]benz odiazepine-1-ethanamine, and pharmacologically acceptable salts thereof, have been found to have substantial diuretic, natriuretic, but little, if any, kaliuretic activity, which can be used alone, or concomittently with other diuretic drugs such as furosemide or hydrochlorothiazide and/or with antihypertensive agents such as propranolo, captopril, minoxidil, prazosin, guanadrel sulfate, whose actions are supplemented by the action of a diuretic drug.Type: GrantFiled: March 17, 1983Date of Patent: April 30, 1985Assignee: The Upjohn CompanyInventors: Jackson B. Hester, Jr., James H. Ludens
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Patent number: 4463013Abstract: Conditions of inappropriate hyperhydration in warm blooded animals can be treated with an essentially water only diuretic drug compound selected from the group ##STR1## wherein m, n, p, A, E, R, R.sub.1, R.sub.2, X, Y and Z are as defined in the specification, e.g., trans-3,4-dichloro-N-methyl-N-[7-(1-pyrrolidinyl)-1,4-dioxaspiro[4.5]dec-8 -yl]benzeneacetamide, or a pharmaceutically acceptable salt thereof, ##STR2## wherein R, R.sub.1, R.sub.2, R.sub.3, P, Q, X and Y are as defined in the specification, e.g., 3,4-dichloro-N-[[8-(1-pyrrolidinyl)-1,4-dioxaspiro[4.5]-dec-8-yl]methyl]be nzeneacetamide, or a pharmaceutically acceptable salt thereof, or ##STR3## where R, R.sup.1, R.sup.2, X and Y are as defined in the specification, e.g., trans-(1)-2-(3,4-dichlorophenyl)-N-methyl-N-[2-(1-pyrrolidinyl)cyclohexyl] acetamide,or ##STR4## wherein p, n, q, X, Y, R, R.sub.1, R.sub.2, R.sub.3, R.sub.4, E, R.sub.5, R.sub.6 are as defined in the specification,or ##STR5## wherein R, R.sub.1, R.sub.2, R.sub.3, R.sub.Type: GrantFiled: August 18, 1982Date of Patent: July 31, 1984Assignee: The Upjohn CompanyInventors: Robert J. Collins, Lester J. Kaplan, James H. Ludens, Philip F. Von Voigtlander