Patents by Inventor Randolph A. McDonald

Randolph A. McDonald 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: 20200397565
    Abstract: Adjustable vision modification using various systems, devices, and processes are provided. Adjustable vision modification may include sensing ocular related physiological activities of a user and making adjustments in an ocular device or ocular system to change the vision of the user. Various sensors and sensor locations may be employed in embodiments to sense or otherwise obtain these physiological activities. Likewise, various ocular devices, ocular processes, and ocular systems may be employed for improving vision.
    Type: Application
    Filed: July 3, 2020
    Publication date: December 24, 2020
    Applicant: Vista Ocular, LLC
    Inventors: Philip C. Roholt, William Kokonaski, Jean-Noël Fehr, Randolph McDonald
  • Patent number: 10702375
    Abstract: Adjustable vision modification using various systems, devices, and processes are provided. Adjustable vision modification may include sensing ocular related physiological activities of a user and making adjustments in an ocular device or ocular system to change the vision of the user. Various sensors and sensor locations may be employed in embodiments to sense or otherwise obtain these physiological activities. Likewise, various ocular devices, ocular processes, and ocular systems may be employed for improving vision.
    Type: Grant
    Filed: September 17, 2016
    Date of Patent: July 7, 2020
    Assignee: VISTA OCULAR, LLC
    Inventors: Philip C. Roholt, William Kokonaski, Jean-Noël Fehr, Randolph McDonald
  • Publication number: 20170079771
    Abstract: Adjustable vision modification using various systems, devices, and processes are provided. Adjustable vision modification may include sensing ocular related physiological activities of a user and making adjustments in an ocular device or ocular system to change the vision of the user. Various sensors and sensor locations may be employed in embodiments to sense or otherwise obtain these physiological activities. Likewise, various ocular devices, ocular processes, and ocular systems may be employed for improving vision.
    Type: Application
    Filed: September 17, 2016
    Publication date: March 23, 2017
    Applicant: Vista Ocular, LLC
    Inventors: Philip C. Roholt, William Kokonaski, Jean-Noël Fehr, Randolph McDonald
  • Patent number: 5348670
    Abstract: Lubricant additives are disclosed which are produced by reacting an alkanolamine, a carboxylic acid and phosphorous acid. The reaction product may also include a boron compound and/or a monofunctional alcohol. The additives are useful in combination with metalworking oils, particularly in extreme pressure applications, to replace currently used chlorinated paraffin additives.
    Type: Grant
    Filed: February 4, 1993
    Date of Patent: September 20, 1994
    Assignee: The Elco Corporation
    Inventors: Randolph A. McDonald, Gerald D. Burt
  • Patent number: 5194166
    Abstract: Lubricant additives are produced by reacting an alkoxylated amine with phosphorous acid. The additives preferably also contain a boron moiety which is reacted with the phosphorous acid and amine, preferably in a one step reaction. More preferably, a mono-functional alcohol or a long-chain aliphatic carboxylic acid is added to this mixture. The additives are particularly useful in metal working oils and particularly as extreme pressure additives to replace the currently used chlorinated paraffin additives.
    Type: Grant
    Filed: July 10, 1992
    Date of Patent: March 16, 1993
    Assignee: The Elco Corporation
    Inventors: Gerald D. Burt, Randolph A. McDonald
  • Patent number: 5130036
    Abstract: Lubricant additives are producd by reacting an alkoxplated amine with phosphorous acid. The additives preferably also contain a boron moiety which is reacted with the phosphorous acid and amine, preferably in a one step reaction. More preferably, a mono-functional alcohol or a long-chain aliphatic carboxylic acid is added to this mixture. The additives are particularly useful in metalworking oils and particularly as extreme pressure additives to replace the currently used chlorinated paraffin additives.
    Type: Grant
    Filed: May 18, 1990
    Date of Patent: July 14, 1992
    Assignee: The Elco Corporation
    Inventors: Gerald D. Burt, Randolph A. McDonald
  • Patent number: 4965002
    Abstract: Lubricant additives are produced by reacting an alkoxylated amine, preferably a dialkoxy long chain alkyl amine, such as a propoxylated amine, with a disubstituted organic phosphite, preferably a dialkyl (C.sub.8 -C.sub.30) phosphite. The additives preferably also contain a boron moiety which is reacted with the phosphite and amine, preferably simultaneously in a one step reaction. The additives are particularly useful in metalworking oils and particularly as extreme pressure additives to replace the currently used chlorinated paraffin additives.
    Type: Grant
    Filed: January 27, 1988
    Date of Patent: October 23, 1990
    Assignee: Elco Corporation
    Inventors: William T. Brannen, Gerald D. Burt, Randolph A. McDonald