Patents by Inventor Philip David ATWOOD

Philip David ATWOOD 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).

  • PROCESSES FOR PREPARING CALIXARENES
    Publication number: 20220177397
    Abstract: This invention relates to a process for preparing a calixarene compound by reacting a phenolic compound and an aldehyde in the presence of at least one nitrogen-containing base as a catalyst to form the calixarene compound. The invention also relates to processes for high-yield, high solid-content production of a calixarene compound, with high selectivity toward a high-purity calix[8]arene compound, without carrying out a recrystallization step.
    Type: Application
    Filed: December 17, 2021
    Publication date: June 9, 2022
    Inventors: Cornelius HAASE, Ricky BIITTIG, Allyson STAATS, Philip David ATWOOD, Jim WEBB, Kelly CHICHAK
  • Processes for preparing calixarenes
    Patent number: 11225450
    Abstract: This invention relates to a process for preparing a calixarene compound by reacting a phenolic compound and an aldehyde in the presence of at least one nitrogen-containing base as a catalyst to form the calixarene compound. The invention also relates to processes for high-yield, high solid-content production of a calixarene compound, with high selectivity toward a high-purity calix[8]arene compound, without carrying out a recrystallization step.
    Type: Grant
    Filed: November 2, 2020
    Date of Patent: January 18, 2022
    Assignee: SI GROUP, INC.
    Inventors: Cornelius Haase, Ricky Biittig, Allyson Staats, Philip David Atwood, Jim Webb, Kelly Chichak
  • Processes for preparing calixarenes
    Patent number: 11072572
    Abstract: This invention relates to a process for preparing a calixarene compound by reacting a phenolic compound and an aldehyde in the presence of at least one nitrogen-containing base as a catalyst to form the calixarene compound. The invention also relates to processes for high-yield, high solid-content production of a calixarene compound, with high selectivity toward a high-purity calix[8]arene compound, without carrying out a recrystallization step.
    Type: Grant
    Filed: August 13, 2020
    Date of Patent: July 27, 2021
    Assignee: SI GROUP, INC.
    Inventors: Cornelius Haase, Ricky Biittig, Allyson Staats, Philip David Atwood, Jim Webb, Kelly Chichak
  • PROCESSES FOR PREPARING CALIXARENES
    Publication number: 20210047253
    Abstract: This invention relates to a process for preparing a calixarene compound by reacting a phenolic compound and an aldehyde in the presence of at least one nitrogen-containing base as a catalyst to form the calixarene compound. The invention also relates to processes for high-yield, high solid-content production of a calixarene compound, with high selectivity toward a high-purity calix[8]arene compound, without carrying out a recrystallization step.
    Type: Application
    Filed: November 2, 2020
    Publication date: February 18, 2021
    Inventors: Cornelius HAASE, Ricky BIITTIG, Allyson STAATS, Philip David ATWOOD, Jim WEBB, Kelly CHICHAK
  • PROCESSES FOR PREPARING CALIXARENES
    Publication number: 20210017109
    Abstract: This invention relates to a process for preparing a calixarene compound by reacting a phenolic compound and an aldehyde in the presence of at least one nitrogen-containing base as a catalyst to form the calixarene compound. The invention also relates to processes for high-yield, high solid-content production of a calixarene compound, with high selectivity toward a high-purity calix[8]arene compound, without carrying out a recrystallization step.
    Type: Application
    Filed: August 13, 2020
    Publication date: January 21, 2021
    Inventors: Cornelius HAASE, Ricky BIITTIG, Allyson STAATS, Philip David ATWOOD, Jim WEBB, Kelly CHICHAK
  • Processes for preparing calix[4]arenes from calix[8]arenes
    Patent number: 10843990
    Abstract: This invention relates to a one-pot synthesis of a high-purity calix[4]arene compound by reacting a phenolic compound and an aldehyde in the presence of at least one nitrogen-containing base as a catalyst to form the calix[8]arene compound, and cleaving the calix[8]arene compound into a high-purity calix[4]arene compound, directly, without carrying out a purification step before the cleaving step. The invention also relates to an improved conversion of a calix[8]arene compound to a calix[4]arene compound, by cleaving a calix[8]arene compound in a glycol ether solvent having a boiling point of at least about 200° C., to result in a high-purity calix[4]arene compound, without using an antisolvent.
    Type: Grant
    Filed: February 8, 2019
    Date of Patent: November 24, 2020
    Assignee: SI GROUP, INC.
    Inventors: Cornelius Haase, Jeff Hiscock, Philip David Atwood
  • Processes for preparing calixarenes
    Patent number: 10781154
    Abstract: This invention relates to a process for preparing a calixarene compound by reacting a phenolic compound and an aldehyde in the presence of at least one nitrogen-containing base as a catalyst to form the calixarene compound. The invention also relates to processes for high-yield, high solid-content production of a calixarene compound, with high selectivity toward a high-purity calix[8]arene compound, without carrying out a recrystallization step.
    Type: Grant
    Filed: February 8, 2019
    Date of Patent: September 22, 2020
    Assignee: SI GROUP, INC.
    Inventors: Cornelius Haase, Ricky Biittig, Allyson Staats, Philip David Atwood, Jim Webb, Kelly Chichak
  • PROCESSES FOR PREPARING CALIXARENES
    Publication number: 20190248721
    Abstract: This invention relates to a process for preparing a calixarene compound by reacting a phenolic compound and an aldehyde in the presence of at least one nitrogen-containing base as a catalyst to form the calixarene compound. The invention also relates to processes for high-yield, high solid-content production of a calixarene compound, with high selectivity toward a high-purity calix[8]arene compound, without carrying out a recrystallization step.
    Type: Application
    Filed: February 8, 2019
    Publication date: August 15, 2019
    Inventors: Cornelius HAASE, Ricky BIITTIG, Allyson STAATS, Philip David ATWOOD, Jim WEBB, Kelly CHICHAK
  • PROCESSES FOR PREPARING CALIX[4]ARENES FROM CALIX[8]ARENES
    Publication number: 20190248722
    Abstract: This invention relates to a one-pot synthesis of a high-purity calix[4]arene compound by reacting a phenolic compound and an aldehyde in the presence of at least one nitrogen-containing base as a catalyst to form the calix[8]arene compound, and cleaving the calix[8]arene compound into a high-purity calix[4]arene compound, directly, without carrying out a purification step before the cleaving step. The invention also relates to an improved conversion of a calix[8]arene compound to a calix[4]arene compound, by cleaving a calix[8]arene compound in a glycol ether solvent having a boiling point of at least about 200° C., to result in a high-purity calix[4]arene compound, without using an antisolvent.
    Type: Application
    Filed: February 8, 2019
    Publication date: August 15, 2019
    Inventors: Cornelius HAASE, Jeff HISCOCK, Philip David ATWOOD