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).

  • Patent number: 5844091
    Abstract: 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: Grant
    Filed: June 25, 1993
    Date of Patent: December 1, 1998
    Assignee: University of Maryland, Baltimore
    Inventors: Mordecai P. Blaustein, John M. Hamlyn, Douglas W. Harris, James H. Ludens, William Rodney Mathews, Jed F. Fisher, Frederic Mandel, Donald W. DuCharme
  • Patent number: 5695756
    Abstract: 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: Grant
    Filed: June 6, 1995
    Date of Patent: December 9, 1997
    Assignee: University of Maryland at Baltimore
    Inventors: Mordecai P. Blaustein, John M. Hamlyn, Douglas W. Harris, James H. Ludens, William Rodney Mathews, Jed F. Fisher, Frederic Mandel, Donald W. DuCharme
  • Patent number: 5668157
    Abstract: 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: Grant
    Filed: June 25, 1996
    Date of Patent: September 16, 1997
    Assignee: Pharmacia & Upjohn Company
    Inventors: Stephen J. Humphrey, Kaushik D. Meisheri, James H. Ludens, Jackson B. Hester, Jr.
  • Patent number: 5633374
    Abstract: 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: Grant
    Filed: November 20, 1995
    Date of Patent: May 27, 1997
    Assignee: The Upjohn Company
    Inventors: Stephen J. Humphrey, Kaushik D. Meisheri, James H. Ludens, Jackson B. Hester, Jr.
  • Patent number: 5567722
    Abstract: 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: Grant
    Filed: February 6, 1995
    Date of Patent: October 22, 1996
    Assignee: The Upjohn Company
    Inventors: Stephen J. Humphrey, Kaushik D. Meisheri, James H. Ludens, Jackson B. Hester, Jr.
  • Patent number: 5429928
    Abstract: 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: Grant
    Filed: July 28, 1992
    Date of Patent: July 4, 1995
    Assignee: University of Maryland at Baltimore
    Inventors: Mordecai P. Blaustein, John M. Hamlyn, Douglas W. Harris, James H. Ludens, William R. Mathews, Jed F. Fisher, Frederic Mandel, Donald W. DuCharme
  • Patent number: 5164296
    Abstract: 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: Grant
    Filed: August 31, 1990
    Date of Patent: November 17, 1992
    Assignee: University of Maryland at Baltimore
    Inventors: Mordecai P. Blaustein, John M. Hamlyn, Douglas W. Harris, James H. Ludens, William R. Mathews, Jed F. Fisher, Frederic Mandel, Donald W. DuCharme
  • Patent number: 4689413
    Abstract: 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: Grant
    Filed: January 31, 1985
    Date of Patent: August 25, 1987
    Assignee: The Upjohn Company
    Inventors: Jackson B. Hester, Jr., James H. Ludens
  • Patent number: 4514407
    Abstract: 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: Grant
    Filed: March 17, 1983
    Date of Patent: April 30, 1985
    Assignee: The Upjohn Company
    Inventors: Jackson B. Hester, Jr., James H. Ludens
  • Patent number: 4463013
    Abstract: 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: Grant
    Filed: August 18, 1982
    Date of Patent: July 31, 1984
    Assignee: The Upjohn Company
    Inventors: Robert J. Collins, Lester J. Kaplan, James H. Ludens, Philip F. Von Voigtlander