Patents by Inventor Godwin Ameh Abel

Godwin Ameh Abel 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).

  • Ring closing metathesis approach to produce precursors of nylon 11, 12, and 13 from oleic acid
    Patent number: 9845294
    Abstract: Provided herein is a method of producing C11, C12, and C13 nylon precursors from oleic acid or esters of oleic acid, the method involving amide formation, ring-closing metathesis, and hydrogenation. Further provided are the products of the method described. Provided herein is a method for producing a lactam, the method comprising the steps of converting oleic acid or an ester of oleic acid into an amide having a general formula of H3C—(CH2)rCH?CH—(CH2)rCONR—(CH2)n-CH?CH2, wherein n is 1, 2, or 3, and R is either hydrogen or benzyl; subjecting the amide to a ring-closing metathesis reaction to produce an intermediate having a general formula of —(CH2)rCONR—(CH2) n-CH?CH2-, wherein n is 1, 2, or 3, R is either hydrogen or benzyl, and both ends are connected to each other; and hydrogenating the intermediate to produce a saturated lactam. In certain embodiments, the saturated lactam has a formula of —NH—(CH2) 10-CO—.
    Type: Grant
    Filed: July 2, 2015
    Date of Patent: December 19, 2017
    Assignee: The University of Toledo
    Inventors: Kana Yamamoto, Sridhar Viamajala, Sasidhar Varanasi, Ajith Yapa Mudiyanselage, Godwin Ameh Abel
  • Ring Closing Metathesis Approach To Produce Precursors Of Nylon 11, 12, And 13 From Oleic Acid
    Publication number: 20170158640
    Abstract: Provided herein is a method of producing C11, C12, and C13 nylon precursors from oleic acid or esters of oleic acid, the method involving amide formation, ring-closing metathesis, and hydrogenation. Further provided are the products of the method described. Provided herein is a method for producing a lactam, the method comprising the steps of converting oleic acid or an ester of oleic acid into an amide having a general formula of H3C—(CH2)rCH?CH—(CH2)rCONR—(CH2)n—CH?CH2, wherein n is 1, 2, or 3, and R is either hydrogen or benzyl; subjecting the amide to a ring-closing metathesis reaction to produce an intermediate having a general formula of —(CH2)rCONR—(CH2) n—CH?CH2—, wherein n is 1, 2, or 3, R is either hydrogen or benzyl, and both ends are connected to each other; and hydrogenating the intermediate to produce a saturated lactam. In certain embodiments, the saturated lactam has a formula of —NH—(CH2) 10—CO—.
    Type: Application
    Filed: July 2, 2015
    Publication date: June 8, 2017
    Applicant: The University of Toledo
    Inventors: Kana Yamamoto, Sridhar Viamajala, Sasidhar Varanasi, Ajith Yapa Mudiyanselage, Godwin Ameh Abel