Patents by Inventor Jonathan C. Evans

Jonathan C. Evans 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).

  • Patent number: 11275072
    Abstract: Effects of Oxygen on grease or another organic paste product can be evaluated with a modified version of the ASTM D942 test methodology for oxidation stability of lubricating greases or other organic paste products by employment of an oxidation pressure vessel, in which at least one of (A) a very small sample of the grease or other organic paste product is deployed for testing within the oxidation pressure vessel such that the sample has an enhanced surface area to mass ratio, and (B) a temperature other than about 99° C. is employed during the testing. In general, the testing is carried out under oxidation pressure conditions. The sample may be evaluated with respect to Oxygen uptake. Additional technique(s) directed to oxidation and/or other properties of the sample may be carried out before to after any Oxygen uptake evaluation, for example, FTIR analysis and/or ATR-FTIR analysis.
    Type: Grant
    Filed: April 5, 2017
    Date of Patent: March 15, 2022
    Assignee: TANNAS COMPANY
    Inventors: Jonathan C. Evans, Theodore W. Selby, Marta Manning
  • Patent number: 10914719
    Abstract: A significantly improved version of the ASTM D942 Test Method, with apparatus employable to effect the same, is provided. This is useful in measurement of grease oxidation.
    Type: Grant
    Filed: November 6, 2014
    Date of Patent: February 9, 2021
    Assignee: TANNAS COMPANY
    Inventors: Theodore W. Selby, Jonathan C. Evans, Gregory C. Miiller, Calvin David Hugo, Sarah Nuss-Warren, Douglas J. Wirsing
  • Patent number: 10823656
    Abstract: Instrumentation embraces an at least partially automated rotational tapered bearing simulator viscometer having electronic control and/or monitoring that includes task unit electronics, which includes a task unit electronics interface. With or without such electronics, the instrumentation may include a particular component configuration and/or employ at least one particular material. Further feature(s) may be extant.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: November 3, 2020
    Assignee: TANNAS COMPANY
    Inventors: Sarah R. Nuss-Warren, Douglas J. Wirsing, Derrick D. Hilliker, Theodore W. Selby, Jonathan C. Evans, Michael T. Kelly, Robert Culver, Fernando Moreira Mendes
  • Patent number: 10663449
    Abstract: Elevated temperature liquid testing apparatus and methodology in which a thin film of test liquid and a reactant/control gas are provided about the top of a depositor member that is surrounded by a special mantle, for example, a substantially cylindrically walled glass mantle. As an oxidative engine oil test, it may mimic turbocharger conditions of a modern internal combustion engine. For example, employing moist air, the apparatus can test a thin film of engine oil for oxidation deposits at a predetermined temperature, say, 285° C., 290° C., or cycled between 285° C. or 290° C. and 320° C. or 330° C.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: May 26, 2020
    Assignee: TANNAS COMPANY
    Inventors: Jonathan C. Evans, Theodore W. Selby, Marta Manning, Gregory C. Miiller, William John VanBergen
  • Patent number: 10625233
    Abstract: An active pharmaceutical ingredients (API) or related substance (RS) can be tested for stability by placing the API or RS in an instrument containing a pressure-controllable atmosphere, controlling the pressure of the atmosphere in the instrument for a predetermined time, and evaluating the API or RS for stability. Testing can be carried out also at predetermined temperature(s) and/or under the influence of gaseous trigger(s) and so forth. For instance, an API sample can be placed in a bomb test instrument/reactor, oxygen as a gaseous trigger can be introduced to contact the API sample under constant and/or ramped temperature(s) and elevated pressure(s) for predetermined time(s), and the API sample can be evaluated for stability. An insert carousel may hold a sample of API(s) and/or RS(s) and/or aliquot(s) of sample(s) of API(s) and/or RS(s) for insertion into the bomb test instrument/reactor.
    Type: Grant
    Filed: April 3, 2018
    Date of Patent: April 21, 2020
    Assignee: Tannas Company
    Inventors: Jonathan C. Evans, Derrick D. Hilliker, Theodore W. Selby
  • Patent number: 10422783
    Abstract: Apparatus includes a pivotable, cradling framework that can hold a rotatable bomb instrument, which can include a hollow cylinder and a grease rack. This may be employed to effect a significantly improved version of the ASTM D942 Test Method. The same is useful in measurement of grease oxidation.
    Type: Grant
    Filed: October 17, 2018
    Date of Patent: September 24, 2019
    Assignee: TANNAS COMPANY
    Inventors: Theodore W. Selby, Jonathan C. Evans, Gregory C. Miiller, Calvin David Hugo, Sarah R. Nuss-Warren, Douglas J. Wirsing
  • Patent number: 10302619
    Abstract: Grease wear test device includes a body in a form of a collar having an outer surface, a first side and an opposing second side, which are open to form a hollow, open channel through the body, which has a center axis, into which opposing vee blocks can be inserted; and perpendicular to the center axis, a pair of opposing holes through and open to the outer surface of the body and the cylindrical inside wall, through which a cylindrical test journal (falex pin) can be inserted for contact in general with opposing vee-shaped channels of the inserted, opposing vee blocks, and for rotation during testing. The device can be used to modify a falex pin and vee block device, to receive and contain a small sample of grease or another organic paste product for testing such as a modified version of an ASTM D2670 test method for measuring wear properties of fluid lubricants (falex pin and vee block method).
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: May 28, 2019
    Assignee: TANNAS COMPANY
    Inventors: Jonathan C. Evans, Theodore W. Selby, Marta Manning, Derrick D. Hilliker, Michael A. Habitz
  • Publication number: 20190145948
    Abstract: Elevated temperature liquid testing apparatus and methodology in which a thin film of test liquid and a reactant/control gas are provided about the top of a depositor member that is surrounded by a special mantle, for example, a substantially cylindrically walled glass mantle. As an oxidative engine oil test, it may mimic turbocharger conditions of a modern internal combustion engine. For example, employing moist air, the apparatus can test a thin film of engine oil for oxidation deposits at a predetermined temperature, say, 285° C., 290° C., or cycled between 285° C. or 290° C. and 320° C. or 330° C.
    Type: Application
    Filed: November 1, 2018
    Publication date: May 16, 2019
    Applicant: Tannas Company
    Inventors: Jonathan C. Evans, Theodore W. Selby, Marta Manning, Gregory C. Miiller, William John VanBergen
  • Publication number: 20190064137
    Abstract: Apparatus includes a pivotable, cradling framework that can hold a rotatable bomb instrument, which can include a hollow cylinder and a grease rack. This may be employed to effect a significantly improved version of the ASTM D942 Test Method. The same is useful in measurement of grease oxidation.
    Type: Application
    Filed: October 17, 2018
    Publication date: February 28, 2019
    Applicant: Tannas Company
    Inventors: Theodore W. Selby, Jonathan C. Evans, Gregory C. Miiller, Calvin David Hugo, Sarah R. Nuss-Warren, Douglas J. Wirsing
  • Publication number: 20180326385
    Abstract: An active pharmaceutical ingredients (API) or related substance (RS) can be tested for stability by placing the API or RS in an instrument containing a pressure-controllable atmosphere, controlling the pressure of the atmosphere in the instrument for a predetermined time, and evaluating the API or RS for stability. Testing can be carried out also at predetermined temperature(s) and/or under the influence of gaseous trigger(s) and so forth. For instance, an API sample can be placed in a bomb test instrument/reactor, oxygen as a gaseous trigger can be introduced to contact the API sample under constant and/or ramped temperature(s) and elevated pressure(s) for predetermined time(s), and the API sample can be evaluated for stability. An insert carousel may hold a sample of API(s) and/or RS(s) and/or aliquot(s) of sample(s) of API(s) and/or RS(s) for insertion into the bomb test instrument/reactor.
    Type: Application
    Filed: April 3, 2018
    Publication date: November 15, 2018
    Applicant: Tannas Company
    Inventors: Jonathan C. Evans, Derrick D. Hilliker, Theodore W. Selby
  • Publication number: 20180003692
    Abstract: Grease wear test device includes a body in a form of a collar having an outer surface, a first side and an opposing second side, which are open to form a hollow, open channel through the body, which has a center axis, into which opposing vee blocks can be inserted; and perpendicular to the center axis, a pair of opposing holes through and open to the outer surface of the body and the cylindrical inside wall, through which a cylindrical test journal (falex pin) can be inserted for contact in general with opposing vee-shaped channels of the inserted, opposing vee blocks, and for rotation during testing. The device can be used to modify a falex pin and vee block device, to receive and contain a small sample of grease or another organic paste product for testing such as a modified version of an ASTM D2670 test method for measuring wear properties of fluid lubricants (falex pin and vee block method).
    Type: Application
    Filed: April 7, 2017
    Publication date: January 4, 2018
    Applicant: Tannas Company
    Inventors: Jonathan C. Evans, Theodore W. Selby, Marta Manning, Derrick D. Hilliker, Michael A. Habitz
  • Publication number: 20170284994
    Abstract: Effects of Oxygen on grease or another organic paste product can be evaluated with a modified version of the ASTM D942 test methodology for oxidation stability of lubricating greases or other organic paste products by employment of an oxidation pressure vessel, in which at least one of (A) a very small sample of the grease or other organic paste product is deployed for testing within the oxidation pressure vessel such that the sample has an enhanced surface area to mass ratio, and (B) a temperature other than about 99° C. is employed during the testing. In general, the testing is carried out under oxidation pressure conditions. The sample may be evaluated with respect to Oxygen uptake. Additional technique(s) directed to oxidation and/or other properties of the sample may be carried out before to after any Oxygen uptake evaluation, for example, FTIR analysis and/or ATR-FTIR analysis.
    Type: Application
    Filed: April 5, 2017
    Publication date: October 5, 2017
    Applicant: Tannas Company
    Inventors: Jonathan C. Evans, Theodore W. Selby, Marta Manning
  • Publication number: 20170205355
    Abstract: A significantly improved version of the ASTM D942 Test Method, with apparatus employable to effect the same, is provided. This is useful in measurement of grease oxidation.
    Type: Application
    Filed: November 6, 2014
    Publication date: July 20, 2017
    Applicant: Tannas Company
    Inventors: Theodore W. Selby, Jonathan C. Evans, Gregory C. Miiller, Calvin David Hugo, Sarah Nuss-Warren, Douglas J. Wirsing
  • Publication number: 20160074328
    Abstract: The present invention is a method for preparing micron-sized or submicron-sized drug particles comprising contacting a solution comprising a poorly water soluble drug substance and at least one freezable organic solvent with a cold surface so as to freeze the solution; and removing the organic solvent. The resulting particles are also disclosed, as are several embodiments of an apparatus that can be used in performing the method of the present invention.
    Type: Application
    Filed: September 22, 2015
    Publication date: March 17, 2016
    Inventors: Brian D. SCHERZER, Jonathan C. EVANS, James E. HITT
  • Patent number: 9175906
    Abstract: The present invention is a method for preparing micron-sized or submicron-sized drug particles comprising contacting a solution comprising a poorly water soluble drug substance and at least one freezable organic solvent with a cold surface so as to freeze the solution; and removing the organic solvent. The resulting particles are also disclosed, as are several embodiments of an apparatus that can be used in performing the method of the present invention.
    Type: Grant
    Filed: August 12, 2003
    Date of Patent: November 3, 2015
    Assignee: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
    Inventors: Brian D. Scherzer, Jonathan C. Evans, James E. Hitt
  • Publication number: 20040210061
    Abstract: The present invention provides various processes for the preparation of (R)-&agr;-(2,3-dimethoxyphenyl)-1-[2-(4-fluorophenyl)ethyl]-4-piperidinemethanol.
    Type: Application
    Filed: May 4, 2004
    Publication date: October 21, 2004
    Applicants: Aventis Pharmaceuticals Inc., Aventis Pharma Deutschland GmbH
    Inventors: Thomas Heinz Eduard Hilpert, Hans-Wolfram Flemming, Sandra K. Stolz-Dunn, Jonathan C. Evans, Ian A. Tomlinson
  • Publication number: 20040137070
    Abstract: The present invention is a method for preparing micron-sized or submicron-sized drug particles comprising contacting a solution comprising a poorly water soluble drug substance and at least one freezable organic solvent with a cold surface so as to freeze the solution; and removing the organic solvent. The resulting particles are also disclosed, as are several embodiments of an apparatus that can be used in performing the method of the present invention.
    Type: Application
    Filed: August 12, 2003
    Publication date: July 15, 2004
    Inventors: Brian D. Scherzer, Jonathan C. Evans, James E. Hitt
  • Patent number: 6713627
    Abstract: The present invention provides various processes for the preparation of (R)-&agr;-(2,3-dimethoxyphenyl)-1-[2-(4-fluorophenyl)ethyl]-4-piperidinemethanol.
    Type: Grant
    Filed: January 11, 2002
    Date of Patent: March 30, 2004
    Assignee: Aventis Pharmaceuticals Inc.
    Inventors: Edward D. Daugs, Jonathan C. Evans, Hans-Wolfram Flemming, Thomas Heinz Eduard Hilpert, Johannes Nicolaas Koek, Frederick M. Laskovics, Sandra K. Stolz-Dunn, Ian A. Tomlinson
  • Publication number: 20030133987
    Abstract: A method for producing micron-sized or submicron-sized drugs is disclosed, which comprises preparing a template emulsion comprising water and a templating agent; preparing a drug-containing mixture comprising a drug substance; and combining the template emulsion with the drug-containing mixture to form a template emulsion loaded with drug particles. Drug particles prepared from this process are also disclosed. The resulting drug particles demonstrate faster dissolution rates and enhanced bioavailability as compared to unprocessed drug particles and particles prepared using other processes.
    Type: Application
    Filed: January 10, 2003
    Publication date: July 17, 2003
    Inventors: Sonke Svenson, Chris J. Tucker, Steve Lubetkin, Jonathan C. Evans, Steve S. Rosenberg
  • Publication number: 20030049323
    Abstract: A process for preparing crystalline particles of a drug substance is disclosed, said process comprising recirculating an anti-solvent through a mixing zone, dissolving the drug substance in a solvent to form a solution, adding the solution to the mixing zone to form a particle slurry in the anti-solvent, and recirculating at least a portion of the particle slurry back through the mixing zone. Particles produced from the process are also disclosed. The present invention has the ability to be operated in a continuous fashion, resulting in a more efficient process and a more uniform product. The present invention has the additional advantage of having the ability to operate at a relatively low solvent ratio, thereby increasing the drug to excipient ratio.
    Type: Application
    Filed: August 27, 2002
    Publication date: March 13, 2003
    Inventors: James E. Hitt, Christopher J. Tucker, Jonathan C. Evans, Cathy A. Curtis, Sonke Svenson