Patents by Inventor Glenn Mitchell

Glenn Mitchell 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: 11401659
    Abstract: The present invention provides compositions comprising cellulose fibers and cellulose ester fibers and wet laid articles made from the compositions, as well as wet laid processes to produce these compositions. More specifically, the present invention provided compositions comprising cellulose fibers and cellulose acetate fibers and wet laid articles made from these compositions as well as wet laid processes to produce these compositions. The present invention also relates to developing a composition, process, wet laid product, or articles exhibiting any one of many desired benefits.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: August 2, 2022
    Assignee: Eastman Chemical Company
    Inventors: Charles Stuart Everett, Melvin Glenn Mitchell, Kenny Randolph Parker, Mounir Izallalen, Koushik Ghosh
  • Patent number: 11396726
    Abstract: The present invention provides compositions comprising cellulose fibers and cellulose ester fibers and wet laid articles made from the compositions, as well as wet laid processes to produce these compositions. More specifically, the present invention provided compositions comprising cellulose fibers and cellulose acetate fibers and wet laid articles made from these compositions as well as wet laid processes to produce these compositions. The present invention also relates to developing a composition, process, wet laid product, or articles exhibiting any one of many the desired benefits. The present invention also relates to a filter media for air filtration comprising cellulose fiber and a staple fiber; wherein said staple filter comprises cellulose ester; wherein said air permeability is higher for a given mean pore size as compared to a filtration that comprises 100% cellulose.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: July 26, 2022
    Assignee: Eastman Chemical Company
    Inventors: Kenny Randolph Parker, Charles Stuart Everett, Melvin Glenn Mitchell, Mounir Izallalen, Koushik Ghosh
  • Patent number: 11390996
    Abstract: Embodiments of the present invention relate to elongated tubular members that include at least one layer comprising a cellulose ester. In some cases, the cellulose ester may be in the form of staple fibers. The layer may be formed via a wet-laid fiber web that may also include cellulose fibers. The elongated tubular members may be suitable for use with food and/or beverage items as, for example, drinking straws or other similar items.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: July 19, 2022
    Assignee: Eastman Chemical Company
    Inventors: Kenny Randolph Parker, Charles Stuart Everett, Melvin Glenn Mitchell, Koushik Ghosh, Mounir Izallalen
  • Patent number: 11390991
    Abstract: The present invention provides compositions comprising cellulose fibers and cellulose ester fibers and wet laid articles made from the compositions, as well as wet laid processes to produce these compositions. More specifically, the present invention provided compositions comprising cellulose fibers and cellulose acetate fibers and wet laid articles made from these compositions as well as wet laid processes to produce these compositions. The present invention also relates to developing a composition, process, wet laid product, or articles exhibiting any one of many the desired benefits. This invention also relates to a process to produce a wet laid article in a paper mill, said process comprising adding cellulose ester staple fiber to a hydropulper zone, and/or to a refining zone, and/or after the refining zone wherein said paper mill process is not substantially modified to allow for said adding of said cellulose ester.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: July 19, 2022
    Assignee: Eastman Chemical Company
    Inventors: Kenny Randolph Parker, Charles Stuart Everett, Melvin Glenn Mitchell, Koushik Ghosh, Mounir Izallalen
  • Patent number: 11339537
    Abstract: The present invention provides compositions comprising cellulose fibers and cellulose ester fibers and wet laid articles made from the compositions, as well as wet laid processes to produce these compositions. More specifically, the present invention provided compositions comprising cellulose fibers and cellulose acetate fibers and wet laid articles made from these compositions as well as wet laid processes to produce these compositions. The present invention also relates to developing a composition, process, wet laid product, or articles exhibiting any one of many desired benefits. This invention also relates to a biodegradable bag.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: May 24, 2022
    Assignee: Eastman Chemical Company
    Inventors: Charles Stuart Everett, Melvin Glenn Mitchell, Kenny Randolph Parker, Koushik Ghosh, Mounir Izallalen
  • Patent number: 11332885
    Abstract: The present invention provides compositions comprising cellulose fibers and cellulose ester fibers and wet laid articles made from the compositions, as well as wet laid processes to produce these compositions. More specifically, the present invention provided compositions comprising cellulose fibers and cellulose acetate fibers and wet laid articles made from these compositions as well as wet laid processes to produce these compositions. The present invention also relates to developing a composition, process, wet laid product, or articles exhibiting any one of many desired benefits.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: May 17, 2022
    Assignee: Eastman Chemical Company
    Inventors: Charles Stuart Everett, Melvin Glenn Mitchell, Kenny Randolph Parker, Koushik Ghosh, Mounir Izallalen
  • Patent number: 11332888
    Abstract: The present invention provides compositions comprising cellulose fibers and cellulose ester fibers and wet laid articles made from the compositions, as well as wet laid processes to produce these compositions. More specifically, the present invention provided compositions comprising cellulose fibers and cellulose acetate fibers and wet laid articles made from these compositions as well as wet laid processes to produce these compositions. The present invention also relates to composition, process, wet laid product, or articles exhibiting any one of many desired benefits. The invention also relates to a composition comprising cellulose fiber and a staple fiber exhibiting improved texturing.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: May 17, 2022
    Assignee: Eastman Chemical Company
    Inventors: Kenny Randolph Parker, Charles Stuart Everett, Melvin Glenn Mitchell, Mounir Izallalen, Koushik Ghosh
  • Patent number: 11313081
    Abstract: The present invention provides compositions comprising cellulose fibers and cellulose ester fibers and wet laid articles made from the compositions, as well as wet laid processes to produce these compositions. More specifically, the present invention provided compositions comprising cellulose fibers and cellulose acetate fibers and wet laid articles made from these compositions as well as wet laid processes to produce these compositions. The present invention also relates to developing a composition, process, wet laid product, or articles exhibiting any one of many desired benefits. The present invention relates a filtration article comprising a wet-laid composition comprising cellulose fibers and staple fibers.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: April 26, 2022
    Assignee: Eastman Chemical Company
    Inventors: Melvin Glenn Mitchell, Kenny Randolph Parker, Charles Stuart Everett, Mounir Izallalen, Koushik Ghosh
  • Patent number: 11306433
    Abstract: A composition and process for making the composition by co-refining: fibrillated virgin cellulose fibers, waste/recycle cellulose fibers, or both; co-refined cellulose ester (CE) staple fibers having a denier per filament (DPF) of less than 3 and the weight percent of CE staple fibers is less than 30 wt. %, based on the weight of CE staple fibers and said cellulose fibers; and water. The composition can be co-refined to obtain lower Canadian standard freeness yet improved drainage and wet laid products having good tensile strength, air permeability, stiffness, burst strength, and bulk.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: April 19, 2022
    Assignee: Eastman Chemical Company
    Inventors: Charles Stuart Everett, Melvin Glenn Mitchell, Kenny Randolph Parker, Koushik Ghosh, Mounir Izallalen
  • Patent number: 11299854
    Abstract: The present invention provides compositions comprising cellulose fibers and cellulose ester fibers and wet laid articles made from the compositions, as well as wet laid processes to produce these compositions. More specifically, the present invention provided compositions comprising cellulose fibers and cellulose acetate fibers and wet laid articles made from these compositions as well as wet laid processes to produce these compositions. The present invention also relates to developing a composition, process, wet laid product, or articles exhibiting any one of many the desired benefits. The Present invention also relates to a wet laid product having higher air permeability the same or lower pore size relative to a 100% cellulose comparative composition.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: April 12, 2022
    Inventors: Charles Stuart Everett, Melvin Glenn Mitchell, Kenny Randolph Parker, Koushik Ghosh, Mounir Izallalen
  • Publication number: 20220106738
    Abstract: A bale of sheets made of waste/recycle cellulose fibers and cellulose ester (CE) staple fibers can be fed to a hydropulper. The CE staple fibers have: i. a denier per filament (DPF) of less than 3, or ii. a cut length of less than 6 mm, or iii. crimping, or iv. a combination of any two or more of (i)-(iii). The bales can be fed and dropped in as entire bales to a hydropulper, or a blend tank directly or indirectly in fluid communication with a hydropulper, using the same feed system employed for feeding cellulose to the hydopulper and avoiding having to defiberize by pulling or drawing fibers from a box container into a hydropulper. The waste/recycle cellulose fibers and CE staple fibers can be co-refined prior to making the bale of sheets.
    Type: Application
    Filed: June 3, 2021
    Publication date: April 7, 2022
    Applicant: Eastman Chemical Company
    Inventors: Charles Stuart Everett, Melvin Glenn Mitchell, Kenny Randolph Parker
  • Patent number: 11292909
    Abstract: The present invention provides an extrudable polymer composition comprising a base polymer and a bicomponent fiber comprising a low melt temperature component selected from the group consisting of high density polyethylene (HDPE) and polylactic acid (PLA) and a high melt temperature component selected from the group consisting of PET, 100% PDLA, 100% PLLA or a 50/50 blend of 100% PDLA and 100% PLLA, and nylon wherein the base polymer has a melt temperature of about 20° C. to 40° C. lower than this high melt temperature component of the bicomponent fiber.
    Type: Grant
    Filed: May 11, 2016
    Date of Patent: April 5, 2022
    Assignee: Earth Renewable Technologies
    Inventors: Thomas Jason Wolfe, Melvin Glenn Mitchell, James Etson Brandenburg
  • Patent number: 11286619
    Abstract: A bale of sheets made of virgin cellulose fibers and cellulose ester (CE) staple fibers can be fed to a hydropulper. The CE staple fibers have: i. a denier per filament (DPF) of less than 3, or ii. a cut length of less than 6 mm, or iii. crimping, or iv. a combination of any two or more of (i)-(iii). The bales can be fed and dropped in as entire bales to a hydropulper, or a blend tank directly or indirectly in fluid communication with a hydropulper, using the same feed system employed for feeding cellulose to the hydopulper and avoiding having to defiberize by pulling or drawing fibers from a box container into a hydropulper.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: March 29, 2022
    Assignee: Eastman Chemical Company
    Inventors: Charles Stuart Everett, Melvin Glenn Mitchell, Kenny Randolph Parker
  • Publication number: 20220042246
    Abstract: The present invention relates to ultrasonic welding of compositions, and wet laid articles made from the compositions, containing cellulose fibers and cellulose ester fibers, as well as wet laid processes using the compositions. More specifically, the present invention relates to a wet laid nonwoven comprising cellulose and cellulose ester fibers. The wet laid nonwoven is bonded to itself and/or to other substrates, and this bonding is accomplished at least in part by ultrasonic welding.
    Type: Application
    Filed: August 16, 2021
    Publication date: February 10, 2022
    Applicant: Eastman Chemical Company
    Inventors: Charles Stuart Everett, Kenny Randolph Parker, Jeremy Kenneth Steach, Melvin Glenn Mitchell
  • Patent number: 11230811
    Abstract: A bale of sheets made of waste/recycle cellulose fibers and cellulose ester (CE) staple fibers can be fed to a hydropulper. The CE staple fibers have: i. a denier per filament (DPF) of less than 3, or ii. a cut length of less than 6 mm, or iii. crimping, or iv. a combination of any two or more of (i)-(iii). The bales can be fed and dropped in as entire bales to a hydropulper, or a blend tank directly or indirectly in fluid communication with a hydropulper, using the same feed system employed for feeding cellulose to the hydopulper and avoiding having to defiberize by pulling or drawing fibers from a box container into a hydropulper. The waste/recycle cellulose fibers and CE staple fibers can be co-refined prior to making the bale of sheets.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: January 25, 2022
    Assignee: Eastman Chemical Company
    Inventors: Charles Stuart Everett, Melvin Glenn Mitchell, Kenny Randolph Parker
  • Patent number: 11118313
    Abstract: The present invention relates to ultrasonic welding of compositions, and wet laid articles made from the compositions, containing cellulose fibers and cellulose ester fibers, as well as wet laid processes using the compositions. More specifically, the present invention relates to a wet laid nonwoven comprising cellulose and cellulose ester fibers. The wet laid nonwoven is bonded to itself and/or to other substrates, and this bonding is accomplished at least in part by ultrasonic welding.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: September 14, 2021
    Assignee: Eastman Chemical Company
    Inventors: Charles Stuart Everett, Kenny Randolph Parker, Jeremy Kenneth Steach, Melvin Glenn Mitchell
  • Publication number: 20200299900
    Abstract: The present invention relates to ultrasonic welding of compositions, and wet laid articles made from the compositions, containing cellulose fibers and cellulose ester fibers, as well as wet laid processes using the compositions. More specifically, the present invention relates to a wet laid nonwoven comprising cellulose and cellulose ester fibers. The wet laid nonwoven is bonded to itself and/or to other substrates, and this bonding is accomplished at least in part by ultrasonic welding.
    Type: Application
    Filed: March 10, 2020
    Publication date: September 24, 2020
    Applicant: Eastman Chemical Company
    Inventors: Charles Stuart Everett, Kenny Randolph Parker, Jeremy Kenneth Steach, Melvin Glenn Mitchell
  • Publication number: 20200240045
    Abstract: The biocomponent fiber functions as a carrier or vehicle for delivering additives to a polymer composition. The bicomponent fiber may be “splittable segmented pie” or “island-in-the-sea” construction with the sea being the low melt temperature component and the island being the high melt temperature component. The low melt temperature polymer may be selected from the group consisting of low density polyethylene (LDPE), high density polyethylene (HDPE), polylactic acid (PLA), polyhydroxyalkenoate (PHA), polypropylene (PP), polystyrene (PS), polyvinylidene fluoride, polybutylene succinate (PBS), low melt temperature polyethylene terephthalate, polytrimethylene terephthalate (PTT) and low melt temperature nylons.
    Type: Application
    Filed: April 10, 2020
    Publication date: July 30, 2020
    Inventors: Emanuel Lopes Martins, Carmen E. Finnessy, Melvin Glenn Mitchell
  • Publication number: 20200063370
    Abstract: A process is provided for applying sizing to a wet laid fibrous sheet that comprises providing an aqueous slurry that comprises cellulose fibers and cellulose ester staple fibers; forming the wet laid fibrous sheet from the slurry; and applying an aqueous sizing composition that comprises one or more sizing agents to the wet laid fibrous sheet. In embodiments, the cellulose ester staple fibers are present in an amount sufficient to permit the sheet to have a higher sizing composition uptake and to impart higher sizing properties to the sheet, compared to a sheet formed from a 100% cellulose fiber slurry, when processed under similar conditions.
    Type: Application
    Filed: July 26, 2019
    Publication date: February 27, 2020
    Applicant: Eastman Chemical Company
    Inventors: Melvin Glenn Mitchell, Charles Stuart Everett, Kenny Randolph Parker
  • Publication number: 20200063357
    Abstract: A composition is contained a blend zone prior to refining containing non-fibrillated virgin cellulose fibers, waste/recycle cellulose fibers or both; cellulose ester fibers, water, and one or more additives comprising fillers, internal sizing agents, biocides, process anti-foaming agents, colorants, optical modifiers, or a combination thereof. An in-line mixer can be used for adding the additives, and the consistency of the composition is lowered relative to a feed of material from a hydropulper.
    Type: Application
    Filed: July 26, 2019
    Publication date: February 27, 2020
    Applicant: Eastman Chemical Company
    Inventors: Charles Stuart Everett, Melvin Glenn Mitchell, Kenny Randolph Parker, Koushik Ghosh, Mounir Izallalen