Patents by Inventor Frederik Karsten

Frederik Karsten 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: 11889785
    Abstract: A walk-behind lawnmower and accompanying method of use allows for height adjustment of the cutting deck relative to all four wheels simultaneously. This is achieved using a linkage that runs along the cutting deck and that connects the front and rear wheel assemblies. Movement of the entire mechanism is achieved using a lever operatively connected to the linkage. The linkage is retained in place through the use of a locking mechanism. The locking mechanism includes a locking pin, a pin engagement mechanism, such as a lug, provided on the linkage, and an array of pin receptacles spaced longitudinally along the cutting deck. The pin engagement mechanism selectively engages the pin when the pin engages a designated pin receptacle on the cutting deck, retaining the cutting deck at a height determined by the prevailing location of the pin which, in turn, is determined by the selected pin receptacle.
    Type: Grant
    Filed: April 21, 2021
    Date of Patent: February 6, 2024
    Assignee: Metalcraft of Mayville, Inc.
    Inventor: Frederik Karsten
  • Publication number: 20220338413
    Abstract: A walk-behind lawnmower and accompanying method of use allows for height adjustment of the cutting deck relative to all four wheels simultaneously. This is achieved using a linkage that runs along the cutting deck and that connects the front and rear wheel assemblies. Movement of the entire mechanism is achieved using a lever operatively connected to the linkage. The linkage is retained in place through the use of a locking mechanism. The locking mechanism includes a locking pin, a pin engagement mechanism, such as a lug, provided on the linkage, and an array of pin receptacles spaced longitudinally along the cutting deck. The pin engagement mechanism selectively engages the pin when the pin engages a designated pin receptacle on the cutting deck, retaining the cutting deck at a height determined by the prevailing location of the pin which, in turn, is determined by the selected pin receptacle.
    Type: Application
    Filed: April 21, 2021
    Publication date: October 27, 2022
    Inventor: Frederik Karsten
  • Patent number: 8034945
    Abstract: The invention relates to a 4-phenyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline derivative according to Formula (I), wherein the substituents are defined as in the description, or a pharmaceutically salt thereof. The compounds of this invention are potent FSH receptor activators and may be used for treating fertility disorders in e.g. controlled ovarian hyperstimulation and IVF procedures.
    Type: Grant
    Filed: May 2, 2006
    Date of Patent: October 11, 2011
    Assignee: N.V. Organon
    Inventors: Cornelis Marius Timmers, Willem Frederik Karstens, Pedro Manuel Grima Poveda
  • Patent number: 7858794
    Abstract: The present invention relates to tetrahydroquinoline derivatives having gene formula (I) or a pharmaceutically acceptable salt thereof, wherein R1 and R2 are H or Me; R3 is H, hydroxy, (1-4C)alkoxy, (di)(1-4C)alkylamino(2-4C)alkoxy or (2-6)heterocycloakl(2-4C)alkoxy; R4 is H, OH, (1-4C)alkoxy or R7; R5 is H, OH, (1-4C)alkoxy or R7, with the proviso that if R4 is H, R5 is not H, OH or (1-4C)alkoxy and that if R5 is H, R4 is not H, OH or (1-4C)alkoxy; R6 is (2-5C)heteroaryl, (6C)aryl, (3-8C)cycloalkyl, (2 6C)heterocycloalkyl or (1-6C)alkyl; R7 is amino, (di)(1-4C)alkylamino, (6C)arylcarbonylamino, (6C)arylcarbonyloxy, (2-5C) heteroarylcarbonylamino, (2-5C)heteroarylcarbonyloxy, R8-(2-4C)alkylamino, R8-(2-4C)alkoxy, R9-methylamino or R9-methoxy; R8 is hydroxy, amino, (-14C)alkoxy, (di)(1-4C)alkylamino, (2-6C)heterocycloalkyl, (2-6C) heterocycloalkylcarbonylamino, (di)(1-4C)alkylaminocarbonylamino, (1-4C)alkoxycarbonylamino and R9 is aminocarbonyl, (di)(1-4C)alkylaminocarbonyl, (2-5C)heteroaryl or (6C)aryl.
    Type: Grant
    Filed: December 16, 2003
    Date of Patent: December 28, 2010
    Assignee: N.V. Organon
    Inventors: Cornelis Marius Timmers, Willem Frederik Karstens
  • Patent number: 7674909
    Abstract: The present invention relates to tetrahydroquinoline derivatives having general formula (I) or a pharmaceutically acceptable salt thereof, wherein R1 and R2 are H, Me; R3 is (2-6C)heterocycloalkyl(1-4C)alkyl, (2-5C)heteroaryl(1-4C)alkyl, (6C)aryl (1-4C)alkyl, (1-4C)(di)alkylaminocarbonylamino(2-4C)alkyl, (2-6C) heterocycloalkylcarbonylamino(2-4C)alkyl, R5-(2-4C)alkyl or R5-carbonyl(1-4C)alkyl; R4 is (2-5C)heteroaryl, (6C)aryl, (3-8C)cycloalkyl, (2-6C)heterocycloalkyl or (1-6C) alkyl and R5 is (di)(1-4C)alkylamino, (1-4C)alkoxy, amino, hydroxy, (6C)arylamino, (di)(3-4C)alkenylamino, (2-5C)heteroaryl(1-4C)alkylamino, (6C)aryl(1-4C) alkylamino, (di)[(1-4C)alkoxy(2-4C)alkyl]amino, (di)[(1-4C)alkylamino(2-4C) alkyl]amino, (di)[amino(2-4C)alkyl]amino or (di)[hydroxy(2-4C)alkyl]amino. The present invention also relates to pharmaceutical compositions comprising said derivatives and the use of these derivatives to regulate fertility.
    Type: Grant
    Filed: December 16, 2003
    Date of Patent: March 9, 2010
    Assignee: N.V. Organon
    Inventors: Cornelis Marius Timmers, Willem Frederik Karstens
  • Publication number: 20080300270
    Abstract: The invention relates to a 4-phenyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline derivative according to Formula (I), wherein the substituents are defined as in the description, or a pharmaceutically salt thereof. The compounds of this invention are potent FSH receptor activators and may be used for treating fertility disorders in e.g. controlled ovarian hyperstimulation and IVF procedures.
    Type: Application
    Filed: May 2, 2006
    Publication date: December 4, 2008
    Inventors: Cornelis Marius Timmers, Willem Frederik Karstens, Pedro Manuel Grima Poveda