Patents by Inventor Mary Ruth Lehrter

Mary Ruth Lehrter 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: 10766180
    Abstract: A micro-voided film comprising high density polyethylene having a molecular weight of at least about 200,000, and low aspect ratio filler having a mean particle size from about 1 to about 25 microns. The film has a thickness of from about 10 to about 75 microns and a void fraction of from about 0.60 to about 0.75. The micro-voided film is made by a process comprising extruding the composition into a film having a thickness of from about 50 to about 300 microns, and orienting the extruded film using a high stalk, blown film process. The process produces a stabilized high stalk for increasing the production rate of blown, high molecular weight polyethylene, while increasing the film's physical and mechanical properties. The high stalk can be stabilized by application of high velocity, low volume flow rate of air over the interior and exterior surfaces of the extruded film.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: September 8, 2020
    Assignee: GREENROCK, LTD.
    Inventors: Mary Ruth Lehrter, Adam Pacelli
  • Publication number: 20180272589
    Abstract: A micro-voided film comprising high density polyethylene having a molecular weight of at least about 200,000, and low aspect ratio filler having a mean particle size from about 1 to about 25 microns. The film has a thickness of from about 10 to about 75 microns and a void fraction of from about 0.60 to about 0.75. The micro-voided film is made by a process comprising extruding the composition into a film having a thickness of from about 50 to about 300 microns, and orienting the extruded film using a high stalk, blown film process. The process produces a stabilized high stalk for increasing the production rate of blown, high molecular weight polyethylene, while increasing the film's physical and mechanical properties. The high stalk can be stabilized by application of high velocity, low volume flow rate of air over the interior and exterior surfaces of the extruded film.
    Type: Application
    Filed: May 31, 2018
    Publication date: September 27, 2018
    Inventors: Mary Ruth LEHRTER, Adam PACELLI
  • Patent number: 10011063
    Abstract: A micro-voided film comprising high density polyethylene having a molecular weight of at least about 200,000, and low aspect ratio filler having a mean particle size from about 1 to about 25 microns. The film has a thickness of from about 10 to about 75 microns and a void fraction of from about 0.60 to about 0.75. The micro-voided film is made by a process comprising extruding the composition into a film having a thickness of from about 50 to about 300 microns, and orienting the extruded film using a high stalk, blown film process. The process produces a stabilized high stalk for increasing the production rate of blown, high molecular weight polyethylene, while increasing the film's physical and mechanical properties. The high stalk can be stabilized by application of high velocity, low volume flow rate of air over the interior and exterior surfaces of the extruded film.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: July 3, 2018
    Assignee: GREENROCK, LTD.
    Inventors: Mary Ruth Lehrter, Adam Pacelli
  • Publication number: 20180099798
    Abstract: Provided herein are packaging materials that include a non-foamed layer and a foamed layer including a polyethylene.
    Type: Application
    Filed: October 10, 2017
    Publication date: April 12, 2018
    Applicant: Sugar Creek Packing Co.
    Inventor: Mary Ruth Lehrter
  • Patent number: 9676131
    Abstract: A micro-voided film comprising high density polyethylene having a molecular weight of at least about 200,000, and low aspect ratio filler having a mean particle size from about 1 to about 25 microns. The film has a thickness of from about 0.1 to about 20 mils and a void fraction of from about 0.60 to about 0.75. The micro-voided film is made by a process comprising extruding the composition into a film having a thickness of from about 20 to about 200 mils, and orienting the extruded film using a high stalk, blown film process. The process produces a stabilized high stalk for increasing the production rate of blown, high molecular weight polyethylene, while increasing the film's physical and mechanical properties. The high stalk can be stabilized by application of high velocity, low volume flow rate of air over the interior and exterior surfaces of the extruded film.
    Type: Grant
    Filed: January 15, 2015
    Date of Patent: June 13, 2017
    Assignee: Greenrock, Ltd.
    Inventors: Mary Ruth Lehrter, Adam Pacelli
  • Publication number: 20150123302
    Abstract: A micro-voided film comprising high density polyethylene having a molecular weight of at least about 200,000, and low aspect ratio filler having a mean particle size from about 1 to about 25 microns. The film has a thickness of from about 0.1 to about 20 mils and a void fraction of from about 0.60 to about 0.75. The micro-voided film is made by a process comprising extruding the composition into a film having a thickness of from about 20 to about 200 mils, and orienting the extruded film using a high stalk, blown film process. The process produces a stabilized high stalk for increasing the production rate of blown, high molecular weight polyethylene, while increasing the film's physical and mechanical properties. The high stalk can be stabilized by application of high velocity, low volume flow rate of air over the interior and exterior surfaces of the extruded film.
    Type: Application
    Filed: January 15, 2015
    Publication date: May 7, 2015
    Inventors: Mary Ruth LEHRTER, Adam Pacelli
  • Publication number: 20150072131
    Abstract: A micro-voided film comprising high density polyethylene having a molecular weight of at least about 200,000, and low aspect ratio filler having a mean particle size from about 1 to about 25 microns. The film has a thickness of from about 10 to about 75 microns and a void fraction of from about 0.60 to about 0.75. The micro-voided film is made by a process comprising extruding the composition into a film having a thickness of from about 50 to about 300 microns, and orienting the extruded film using a high stalk, blown film process. The process produces a stabilized high stalk for increasing the production rate of blown, high molecular weight polyethylene, while increasing the film's physical and mechanical properties. The high stalk can be stabilized by application of high velocity, low volume flow rate of air over the interior and exterior surfaces of the extruded film.
    Type: Application
    Filed: November 17, 2014
    Publication date: March 12, 2015
    Inventors: Mary Ruth LEHRTER, Adam PACELLI
  • Patent number: 8889047
    Abstract: A micro-voided film comprising high density polyethylene having a molecular weight of at least about 200,000, and low aspect ratio filler having a mean particle size from about 1 to about 25 microns. The film has a thickness of from about 10 to about 75 microns and a void fraction of from about 0.60 to about 0.75. The micro-voided film is made by a process comprising extruding the composition into a film having a thickness of from about 50 to about 300 microns, and orienting the extruded film using a high stalk, blown film process. The process produces a stabilized high stalk for increasing the production rate of blown, high molecular weight polyethylene, while increasing the film's physical and mechanical properties. The high stalk can be stabilized by application of high velocity, low volume flow rate of air over the interior and exterior surfaces of the extruded film.
    Type: Grant
    Filed: January 11, 2011
    Date of Patent: November 18, 2014
    Assignee: Greenrock, Ltd.
    Inventors: Mary Ruth Lehrter, Adam Pacelli
  • Publication number: 20110171449
    Abstract: A micro-voided film comprising high density polyethylene having a molecular weight of at least about 200,000, and low aspect ratio filler having a mean particle size from about 1 to about 25 microns. The film has a thickness of from about 10 to about 75 microns and a void fraction of from about 0.60 to about 0.75. The micro-voided film is made by a process comprising extruding the composition into a film having a thickness of from about 50 to about 300 microns, and orienting the extruded film using a high stalk, blown film process. The process produces a stabilized high stalk for increasing the production rate of blown, high molecular weight polyethylene, while increasing the film's physical and mechanical properties. The high stalk can be stabilized by application of high velocity, low volume flow rate of air over the interior and exterior surfaces of the extruded film.
    Type: Application
    Filed: January 11, 2011
    Publication date: July 14, 2011
    Inventors: Mary Ruth LEHRTER, Adam Pacelli
  • Patent number: 6699347
    Abstract: The present invention provides a process comprising the steps of (a) applying less than about 0.1 grams per square meter (gsm) of a release agent to a transfer surface, wherein the release agent is selected such that a test sample of the release agent having a concentration at or above its critical surface tension concentration, has a surface tension of less than about 50 dyne/cm or forms a contact angle with the material of the transfer surface of less than about 120°; (b) applying an adhesive to the transfer surface; and (c) transferring the adhesive from the transfer surface to a material web. Preferred embodiments are provided where the transfer surface is metals, polymers, elastomers, ceramics, wood, or combinations thereof and the release agent has the formula: X—CF2O—(C2F4O)p—(CF2O)q—CF2—X. Additional embodiments are provided to continuous and intermittent processes.
    Type: Grant
    Filed: May 20, 2002
    Date of Patent: March 2, 2004
    Assignee: The Procter & Gamble Company
    Inventors: Mary Ruth Lehrter, Steven Lee Barnholtz, James Michael Singer, Glenn David Boutilier, Andrew Julian Wnuk, Dean Arthur Zimmerman, Timothy Jude Lorenz
  • Publication number: 20030213548
    Abstract: The present invention provides a process comprising the steps of (a) applying less than about 0.1 grams per square meter (gsm) of a release agent to a transfer surface, wherein the release agent is selected such that a test sample of the release agent having a concentration at or above its critical surface tension concentration, has a surface tension of less than about 50 dyne/cm or forms a contact angle with the material of the transfer surface of less than about 120°; (b) applying an adhesive to the transfer surface; and (c) transferring the adhesive from the transfer surface to a material web.
    Type: Application
    Filed: May 20, 2002
    Publication date: November 20, 2003
    Applicant: The Procter & Gamble Company
    Inventors: Mary Ruth Lehrter, Steven Lee Barnholtz, James Michael Singer, Glenn David Boutilier, Andrew Julian Wnuk, Dean Arthur Zimmerman, Timothy Jude Lorenz
  • Patent number: 6261580
    Abstract: Tissue paper webs useful in the manufacture of soft, tissue products such as wipes and facial tissues, and processes for making the webs are described. The tissue paper webs include papermaking fibers, an antimigration material and an emollient lotion. Preferred antimigration materials include quaternary ammonium compounds. Preferred emollient lotions include a hydrocarbon emollient. The preferred process for making the preferred invention includes providing the antimigration material to the papermaking furnish and depositing the emollient lotion onto at least one surface of the dried tissue web that includes an antimigration material.
    Type: Grant
    Filed: August 31, 1998
    Date of Patent: July 17, 2001
    Assignee: The Procter & Gamble Company
    Inventors: Mary Ruth Lehrter, Paul Dennis Trokhan, Kenneth Douglas Vinson