Patents by Inventor Michael C. WALKUP

Michael C. WALKUP 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: 20240199927
    Abstract: The phloroglucinolic acetaldehyde resin includes multiple phloroglucinolic units defined by formula (I) wherein the number of phloroglucinolic unit is an integer from 2 to 20, and at least one of R1, R2, and R3 combines with a second phloroglucinolic unit to form a methyl-substituted methylene bridge, where in the second and third ones of R1, R2 and R3 is a hydrogen atom or combines with another phloroglucinolic unit to form another methyl-substituted methylene bridge, with the proviso that, for any terminal unit of formula (I), any two of R1, R2 and R3 are a hydrogen atom.
    Type: Application
    Filed: March 15, 2022
    Publication date: June 20, 2024
    Inventors: Tamon ITAHASHI, Toshihiro NOBUOKA, Michael C. WALKUP
  • Publication number: 20230064028
    Abstract: A solid phloroglucinolic resin comprises reacting a phloroglucinolic compound and a ketone in the presence of an acid catalyst. The solid phloroglucinolic resin formed includes multiple phloroglucinolic units defined by formula (I) wherein at least one of R1, R2, and R3 combines with a second phloroglucinolic unit to form a di-substituted methylene bridge, wherein the second one of R1, R2, and R3 is a hydrogen atom or combines with a third phloroglucinolic unit to form another di-substituted methylene bridge, and wherein the third one of R1, R2 and R3 is a hydrogen atom.
    Type: Application
    Filed: January 6, 2021
    Publication date: March 2, 2023
    Inventors: Tamon ITAHASHI, Toshihiro NOBUOKA, Michael C. WALKUP
  • Patent number: 11236190
    Abstract: A resorcinolic novolac resin composition comprising the reaction product of (i) an aldehyde or ketone, and (ii) aralkyl-substituted resorcinol and resorcinol, where the moles of the aralkyl-substituted resorcinol to the total moles of the resorcinol and aralkyl-substituted resorcinol is 0.01:1 to 0.4:1.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: February 1, 2022
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Tamon Itahashi, David P. McNaughton, Koichiro Tajima, Michael C. Walkup
  • Publication number: 20200062884
    Abstract: A resorcinolic novolac resin composition comprising the reaction product of (i) an aldehyde or ketone, and (ii) aralkyl-substituted resorcinol and resorcinol, where the moles of the aralkyl-substituted resorcinol to the total moles of the resorcinol and aralkyl-substituted resorcinol is 0.01:1 to 0.4:1.
    Type: Application
    Filed: February 28, 2018
    Publication date: February 27, 2020
    Inventors: Tamon ITAHASHI, David P. MCNAUGHTON, Koichiro TAJIMA, Michael C. WALKUP