Patents by Inventor Mohammad Rafiee

Mohammad Rafiee 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).

  • Publication number: 20220139180
    Abstract: A system trains and uses event recognition models for recognizing custom events types defined by a user within a camera feed of a surveillance camera, The camera can be fixed-view, with a relatively constant position and angle, and the background of the video images video can be likewise relatively constant. A user interface receives, from a user, positive and negative samples of the event in question, such as a designation of live or pre-recorded portions of a camera feed as being positive or negative examples of the event in question. Based on the samples, the user system trains an event recognition model (e.g., using few-shot learning techniques) to detect occurrences of custom event types in the camera feed. A response is performed based on detected occurrences of the event. The user can flag mistakes (false positive or false negative) which can be incorporated into the model to enhance its accuracy.
    Type: Application
    Filed: October 28, 2021
    Publication date: May 5, 2022
    Inventor: Mohammad Rafiee JAHROMI
  • Patent number: 11028235
    Abstract: Methods of selectively modifying lignin, polycarboxylated products thereof, and methods of deriving aromatic compounds therefrom. The methods comprise electrochemically oxidizing lignin using stable nitroxyl radicals to selectively oxidize primary hydroxyls on ?-O-4 phenylpropanoid units to corresponding carboxylic acids while leaving the secondary hydroxyls unchanged. The oxidation results in polycarboxylated lignin in the form of a polymeric ?-hydroxy acid. The polymeric ?-hydroxy acid has a high loading of carboxylic acid and can be isolated in acid form, deprotonated, and/or converted to a salt. The ?-hydroxy acid, anion, or salt can also be subjected to acidolysis to generate various aromatic monomers or oligomers. The initial oxidation of lignin to the polycarboxylated form renders the lignin more susceptible to acidolysis and thereby enhances the yield of aromatic monomers and oligomers obtained through acidolysis.
    Type: Grant
    Filed: May 17, 2019
    Date of Patent: June 8, 2021
    Assignee: WISCONSIN ALUMNI RESEARCH FOUNDATION
    Inventors: Shannon S. Stahl, Mohammad Rafiee
  • Publication number: 20200024407
    Abstract: Methods of selectively modifying lignin, polycarboxylated products thereof, and methods of deriving aromatic compounds therefrom. The methods comprise electrochemically oxidizing lignin using stable nitroxyl radicals to selectively oxidize primary hydroxyls on ?-O-4 phenylpropanoid units to corresponding carboxylic acids while leaving the secondary hydroxyls unchanged. The oxidation results in polycarboxylated lignin in the form of a polymeric ?-hydroxy acid. The polymeric ?-hydroxy acid has a high loading of carboxylic acid and can be isolated in acid form, deprotonated, and/or converted to a salt. The ?-hydroxy acid, anion, or salt can also be subjected to acidolysis to generate various aromatic monomers or oligomers. The initial oxidation of lignin to the polycarboxylated form renders the lignin more susceptible to acidolysis and thereby enhances the yield of aromatic monomers and oligomers obtained through acidolysis.
    Type: Application
    Filed: May 17, 2019
    Publication date: January 23, 2020
    Applicant: WISCONSIN ALUMNI RESEARCH FOUNDATION
    Inventors: Shannon S. Stahl, Mohammad Rafiee
  • Patent number: 10336868
    Abstract: Methods of selectively modifying lignin, polycarboxylated products thereof, and methods of deriving aromatic compounds therefrom. The methods comprise electrochemically oxidizing lignin using stable nitroxyl radicals to selectively oxidize primary hydroxyls on ?-O-4 phenylpropanoid units to corresponding carboxylic acids while leaving the secondary hydroxyls unchanged. The oxidation results in polycarboxylated lignin in the form of a polymeric ?-hydroxy acid. The polymeric ?-hydroxy acid has a high loading of carboxylic acid and can be isolated in acid form, deprotonated, and/or converted to a salt. The ?-hydroxy acid, anion, or salt can also be subjected to acidolysis to generate various aromatic monomers or oligomers. The initial oxidation of lignin to the polycarboxylated form renders the lignin more susceptible to acidolysis and thereby enhances the yield of aromatic monomers and oligomers obtained through acidolysis.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: July 2, 2019
    Assignee: WISCONSIN ALUMNI RESEARCH FOUNDATION
    Inventors: Shannon S. Stahl, Mohammad Rafiee
  • Patent number: 9903028
    Abstract: Methods of selectively modifying lignin, polycarboxylated products thereof, and methods of deriving aromatic compounds therefrom. The methods comprise electrochemically oxidizing lignin using stable nitroxyl radicals to selectively oxidize primary hydroxyls on ?-O-4 phenylpropanoid units to corresponding carboxylic acids while leaving the secondary hydroxyls unchanged. The oxidation results in polycarboxylated lignin in the form of a polymeric ?-hydroxy acid. The polymeric ?-hydroxy acid has a high loading of carboxylic acid and can be isolated in acid form, deprotonated, and/or converted to a salt. The ?-hydroxy acid, anion, or salt can also be subjected to acidolysis to generate various aromatic monomers or oligomers. The initial oxidation of lignin to the polycarboxylated form renders the lignin more susceptible to acidolysis and thereby enhances the yield of aromatic monomers and oligomers obtained through acidolysis.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: February 27, 2018
    Assignee: WISCONSIN ALUMNI RESEARCH FOUNDATION
    Inventors: Shannon S. Stahl, Mohammad Rafiee
  • Publication number: 20170342219
    Abstract: Methods of selectively modifying lignin, polycarboxylated products thereof, and methods of deriving aromatic compounds therefrom. The methods comprise electrochemically oxidizing lignin using stable nitroxyl radicals to selectively oxidize primary hydroxyls on ?-O-4 phenylpropanoid units to corresponding carboxylic acids while leaving the secondary hydroxyls unchanged. The oxidation results in polycarboxylated lignin in the form of a polymeric ?-hydroxy acid. The polymeric ?-hydroxy acid has a high loading of carboxylic acid and can be isolated in acid form, deprotonated, and/or converted to a salt. The ?-hydroxy acid, anion, or salt can also be subjected to acidolysis to generate various aromatic monomers or oligomers. The initial oxidation of lignin to the polycarboxylated form renders the lignin more susceptible to acidolysis and thereby enhances the yield of aromatic monomers and oligomers obtained through acidolysis.
    Type: Application
    Filed: May 27, 2016
    Publication date: November 30, 2017
    Inventors: Shannon S. Stahl, Mohammad Rafiee
  • Publication number: 20170342574
    Abstract: Methods of selectively modifying lignin, polycarboxylated products thereof, and methods of deriving aromatic compounds therefrom. The methods comprise electrochemically oxidizing lignin using stable nitroxyl radicals to selectively oxidize primary hydroxyls on ?-O-4 phenylpropanoid units to corresponding carboxylic acids while leaving the secondary hydroxyls unchanged. The oxidation results in polycarboxylated lignin in the form of a polymeric ?-hydroxy acid. The polymeric ?-hydroxy acid has a high loading of carboxylic acid and can be isolated in acid form, deprotonated, and/or converted to a salt. The ?-hydroxy acid, anion, or salt can also be subjected to acidolysis to generate various aromatic monomers or oligomers. The initial oxidation of lignin to the polycarboxylated form renders the lignin more susceptible to acidolysis and thereby enhances the yield of aromatic monomers and oligomers obtained through acidolysis.
    Type: Application
    Filed: May 27, 2016
    Publication date: November 30, 2017
    Inventors: Shannon S. Stahl, Mohammad Rafiee