Patents by Inventor Philip A. Welkhoff

Philip A. Welkhoff 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: 20240181047
    Abstract: Emulsion-based and micromolded (“MM”) or three dimensional printed (“3DP”) polymeric formulations for single injection of antigen, preferably releasing at two or more time periods, have been developed. Formulations are preferably formed of biocompatible, biodegradable polymers. Discrete regions encapsulating antigen, alone or in combination with other antigens, adjuvants, stabilizers, and release modifiers, are present in the formulations. Antigen is preferably present in excipient at the time of administration, or on the surface of the formulation, for immediate release, and incorporated within the formulation for release at ten to 45 days after initial release of antigen, optionally at ten to 90 day intervals for release of antigen in one or more additional time periods. Antigen may be stabilized through the use of stabilizing agents such as trehalose glass. In a preferred embodiment for immunization against polio, antigen is released at the time of administration, and two, four and six months thereafter.
    Type: Application
    Filed: December 29, 2023
    Publication date: June 6, 2024
    Inventors: Ana Jaklenec, William Gates, Philip A. Welkhoff, Boris Nikolic, Lowell L. Wood, JR., Robert S. Langer, Thanh Duc Nguyen, Stephany Yi Tzeng, James J. Norman, Kevin McHugh
  • Patent number: 11975069
    Abstract: Emulsion-based and micromolded (“MM”) or three dimensional printed (“3DP”) polymeric formulations for single injection of antigen, preferably releasing at two or more time periods, have been developed. Formulations are preferably formed of biocompatible, biodegradable polymers. Discrete regions encapsulating antigen, alone or in combination with other antigens, adjuvants, stabilizers, and release modifiers, are present in the formulations. Antigen is preferably present in excipient at the time of administration, or on the surface of the formulation, for immediate release, and incorporated within the formulation for release at ten to 45 days after initial release of antigen, optionally at ten to 90 day intervals for release of antigen in one or more additional time periods. Antigen may be stabilized through the use of stabilizing agents such as trehalose glass. In a preferred embodiment for immunization against polio, antigen is released at the time of administration, and two, four and six months thereafter.
    Type: Grant
    Filed: January 7, 2021
    Date of Patent: May 7, 2024
    Assignees: MASSACHUSETTS INSTITUTE OF TECHNOLOGY, TOKITAE LLC
    Inventors: Ana Jaklenec, William Gates, Philip A. Welkhoff, Boris Nikolic, Lowell L. Wood, Jr., Robert S. Langer, Thanh Duc Nguyen, Stephany Yi Tzeng, James J. Norman, Kevin McHugh
  • Publication number: 20230372254
    Abstract: Salt formulations, which are resistant to moisture and cooking conditions, are described herein. The formulations provide particles of micronutrients and vitamins encapsulated within heat resistant pH-sensitive water-insoluble polymers, which are packaged within a salt shell. The pH-sensitive, water-insoluble, thermally stable materials stabilize the micronutrients, particularly at high temperatures, such as during food preparation and cooking, and release the micronutrients at the desired locations such as the stomach, small intestine, etc. Preferred pH-sensitive polymers release at a low pH, less than the pH present in the stomach. The particles can be used to deliver daily-recommended doses of micronutrients simultaneously with salt, eliminating the need for vitamin pills. This is particularly important in populations suffering from severe malnutrition.
    Type: Application
    Filed: December 16, 2022
    Publication date: November 23, 2023
    Inventors: Ana Jaklenec, Xian Xu, Lowell L. Wood, Jr., Philip A. Welkhoff, William Gates, Boris Nikolic, Robert S. Langer
  • Patent number: 11541017
    Abstract: Salt formulations, which are resistant to moisture and cooking conditions, are described herein. The formulations provide particles of micronutrients and vitamins encapsulated within heat resistant pH-sensitive water-insoluble polymers, which are packaged within a salt shell. The pH-sensitive, water-insoluble, thermally stable materials stabilize the micronutrients, particularly at high temperatures, such as during food preparation and cooking, and release the micronutrients at the desired locations such as the stomach, small intestine, etc. Preferred pH-sensitive polymers release at a low pH, less than the pH present in the stomach. The particles can be used to deliver daily-recommended doses of micronutrients simultaneously with salt, eliminating the need for vitamin pills. This is particularly important in populations suffering from severe malnutrition.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: January 3, 2023
    Assignees: MASSACHUSETTS INSTITUTE OF TECHNOLOGY, TOKITAE LLC
    Inventors: Ana Jaklenec, Xian Xu, Lowell L. Wood, Jr., Philip A. Welkhoff, William Gates, Boris Nikolic, Robert S. Langer
  • Publication number: 20210205444
    Abstract: Emulsion-based and micromolded (“MM”) or three dimensional printed (“3DP”) polymeric formulations for single injection of antigen, preferably releasing at two or more time periods, have been developed. Formulations are preferably formed of biocompatible, biodegradable polymers. Discrete regions encapsulating antigen, alone or in combination with other antigens, adjuvants, stabilizers, and release modifiers, are present in the formulations. Antigen is preferably present in excipient at the time of administration, or on the surface of the formulation, for immediate release, and incorporated within the formulation for release at ten to 45 days after initial release of antigen, optionally at ten to 90 day intervals for release of antigen in one or more additional time periods. Antigen may be stabilized through the use of stabilizing agents such as trehalose glass. In a preferred embodiment for immunization against polio, antigen is released at the time of administration, and two, four and six months thereafter.
    Type: Application
    Filed: January 7, 2021
    Publication date: July 8, 2021
    Inventors: Ana Jaklenec, William Gates, Philip A. Welkhoff, Boris Nikolic, Lowell L. Wood, JR., Robert S. Langer, Thanh Duc Nguyen, Stephany Yi Tzeng, James J. Norman, Kevin McHugh
  • Patent number: 10960073
    Abstract: Emulsion-based and micromolded (“MM”) or three dimensional printed (“3DP”) polymeric formulations for single injection of antigen, preferably releasing at two or more time periods, have been developed. Formulations are preferably formed of biocompatible, biodegradable polymers. Discrete regions encapsulating antigen, alone or in combination with other antigens, adjuvants, stabilizers, and release modifiers, are present in the formulations. Antigen is preferably present in excipient at the time of administration, or on the surface of the formulation, for immediate release, and incorporated within the formulation for release at ten to 45 days after initial release of antigen, optionally at ten to 90 day intervals for release of antigen in one or more additional time periods. Antigen may be stabilized through the use of stabilizing agents such as trehalose glass. In a preferred embodiment for immunization against polio, antigen is released at the time of administration, and two, four and six months thereafter.
    Type: Grant
    Filed: May 2, 2019
    Date of Patent: March 30, 2021
    Assignees: TOKITAE LLC, MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: Ana Jaklenec, William Gates, Philip A. Welkhoff, Boris Nikolic, Lowell L. Wood, Jr., Robert S. Langer, Thanh Duc Nguyen, Stephany Yi Tzeng, James J. Norman, Kevin McHugh
  • Patent number: 10941971
    Abstract: Portage storage containers including controlled evaporative cooling systems are described herein. In some embodiments, a portable container including an integral controlled evaporative cooling system includes: a storage region, an evaporative region adjacent to the storage region, a desiccant region adjacent to the outside of the container, and an insulation region positioned between the evaporative region and the desiccant region. A vapor conduit with an attached vapor control unit has a first end within the evaporative region and a second end within the desiccant region. In some embodiments, the controlled evaporative cooling systems are positioned in a radial configuration within the portable container.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: March 9, 2021
    Assignee: Tokitae LLC
    Inventors: Fong Li Chou, Philip A. Welkhoff, Lawrence Morgan Fowler, Shieng Liu, Peter K. Maier-Laxhuber, Nels R. Peterson, Ivan Poleshchuk, Ralf W. Schmidt, Clarence T. Tegreene, Lowell L. Wood, Jr., Reiner M. Wörz, David J. Yager
  • Patent number: 10783989
    Abstract: Embodiments disclosed herein relate to methods, devices, and computer systems thereof for automated data collection from a subject. In certain embodiments, one or more characteristics of a subject are sensed, and the subject is given a queue status indicator based on a comparison of the subject's one or more sensed characteristics with corresponding sensed characteristics from other subjects. In one embodiment, the subject is a healthcare worker and the system, methods, and devices are utilized to evaluate the overall health of the worker as part of the check-in process for work.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: September 22, 2020
    Assignee: Elwha LLC
    Inventors: Mahalaxmi Gita Bangera, Michael H. Baym, Philip A. Welkhoff, Roderick A. Hyde, Muriel Y. Ishikawa, Elizabeth A. Sweeney, Lowell L. Wood, Jr.
  • Publication number: 20190328871
    Abstract: Emulsion-based and micromolded (“MM”) or three dimensional printed (“3DP”) polymeric formulations for single injection of antigen, preferably releasing at two or more time periods, have been developed. Formulations are preferably formed of biocompatible, biodegradable polymers. Discrete regions encapsulating antigen, alone or in combination with other antigens, adjuvants, stabilizers, and release modifiers, are present in the formulations. Antigen is preferably present in excipient at the time of administration, or on the surface of the formulation, for immediate release, and incorporated within the formulation for release at ten to 45 days after initial release of antigen, optionally at ten to 90 day intervals for release of antigen in one or more additional time periods. Antigen may be stabilized through the use of stabilizing agents such as trehalose glass. In a preferred embodiment for immunization against polio, antigen is released at the time of administration, and two, four and six months thereafter.
    Type: Application
    Filed: May 2, 2019
    Publication date: October 31, 2019
    Inventors: Ana Jaklenec, William Gates, Philip A. Welkhoff, Boris Nikolic, Lowell L. Wood, JR., Robert S. Langer, Thanh Duc Nguyen, Stephany Yi Tzeng, James J. Norman, Kevin McHugh
  • Patent number: 10300136
    Abstract: Emulsion-based and micromolded (“MM”) or three dimensional printed (“3DP”) polymeric formulations for single injection of antigen, preferably releasing at two or more time periods, have been developed. Formulations are preferably formed of biocompatible, biodegradable polymers. Discrete regions encapsulating antigen, alone or in combination with other antigens, adjuvants, stabilizers, and release modifiers, are present in the formulations. Antigen is preferably present in excipient at the time of administration, or on the surface of the formulation, for immediate release, and incorporated within the formulation for release at ten to 45 days after initial release of antigen, optionally at ten to 90 day intervals for release of antigen in one or more additional time periods. Antigen may be stabilized through the use of stabilizing agents such as trehalose glass. In a preferred embodiment for immunization against polio, antigen is released at the time of administration, and two, four and six months thereafter.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: May 28, 2019
    Assignees: Massachusetts Institute of Technology, Tokitae LLC
    Inventors: Ana Jaklenec, William Gates, Philip A. Welkhoff, Boris Nikolic, Lowell L. Wood, Robert S. Langer, Thanh Duc Nguyen, Stephany Yi Tzeng, James J. Norman, Kevin McHugh