Patents by Inventor Carl Eric Elmquist
Carl Eric Elmquist 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).
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Patent number: 11905377Abstract: The present disclosure relates to controlling drug release in cross-linked poly(valerolactone) based matrices. In one aspect, the compounds or pharmaceutically acceptable salts thereof include a poly(valerolactone)-co-poly(allylvalerolactone)-co-polyethylene glycol (PEG) copolymer. In some embodiments, at least a portion of allylvalerolactone residues within the copolymer are crosslinked with a crosslinker. In some embodiments, the compound has a polydispersity index of less than or equal to 1.5. In one aspect, a method is described herein, comprising: (a) polymerizing valerolactone residues, allylvalerolactone, and polyethylene glycol residues in the presence of a non-metal catalyst via a ring opening polymerization to produce a poly(valerolactone)-co-poly(allylvalerolactone)-co-polyethylene glycol copolymer; (b) crosslinking the poly(valerolactone)-co-poly(allylvalerolactone)-co-polyethylene glycol copolymer with a crosslinker; and (c) loading a drug into the crosslinked copolymer.Type: GrantFiled: January 17, 2020Date of Patent: February 20, 2024Assignees: Pendant Biosciences, Inc., The Governing Council of the University of TorontoInventors: Timothy Tordella Ruckh, Carl Eric Elmquist, David Michael Stevens, Frantz Le Dévédec, Hilary Boucher, Christine Allen
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Publication number: 20230190664Abstract: Disclosed are crosslinked particles (e.g., microparticles) that are capable of storing and releasing drugs. The particles can be macroparticles, microparticles, or nanoparticles and can be composed of polyester backbones. The particles can be loaded with a drug. The particles can degrade in vivo to release the drug. The particles can be prepared by crosslinking functionalized polyester backbones and loaded with a given drug. The particles of the present disclosure can be injected with a syringe. In some embodiments, the particles of the present disclosure are administered in connection with a surgery and release the drug after the site of the surgery for a period of 1-6 months.Type: ApplicationFiled: July 22, 2022Publication date: June 22, 2023Inventors: Frantz LE DEVEDEC, Christine ALLEN, David M. STEVENS, Dean James RAGER-AGUIAR, Timothy Tordella RUCKH, Carl Eric ELMQUIST
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Publication number: 20230000785Abstract: Embodiments described herein relate generally to compounds comprising allyl lactide residues. One aspect described herein relates generally to a compound or a pharmaceutically acceptable salt thereof, comprising allyl lactide residues and lactide residues, wherein the compound or pharmaceutically acceptable salt thereof is substantially free of valerolactone residues. Another aspect relates to a method of incorporating a drug into a compound, comprising: (i) providing a compound or a pharmaceutically acceptable salt thereof, comprising allyl lactide residues and lactide residues, wherein the compound or pharmaceutically acceptable salt thereof is substantially free of valerolactone residues; (ii) incubating the compound and a drug in the presence of a solvent for an incubation period to form a drug-loaded compound; and (iii) separating the drug-loaded compound from the solvent.Type: ApplicationFiled: June 17, 2022Publication date: January 5, 2023Inventors: Carl Eric Elmquist, Timothy Tordella Ruckh
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Patent number: 11426356Abstract: Disclosed are crosslinked particles (e.g., microparticles) that are capable of storing and releasing drugs. The particles can be macroparticles, microparticles, or nanoparticles and can be composed of polyester backbones. The particles can be loaded with a drug. The particles can degrade in vivo to release the drug. The particles can be prepared by crosslinking functionalized polyester backbones and loaded with a given drug. The particles of the present disclosure can be injected with a syringe. In some embodiments, the particles of the present disclosure are administered in connection with a surgery and release the drug after the site of the surgery for a period of 1-6 months.Type: GrantFiled: February 27, 2019Date of Patent: August 30, 2022Assignees: Pendant Biosciences, Inc., The Governing Council of the University of TorontoInventors: Frantz Le Devedec, Christine Allen, David M. Stevens, Dean James Rager-Aguiar, Timothy Tordella Ruckh, Carl Eric Elmquist
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Publication number: 20210277275Abstract: The present disclosure is directed to polymeric coatings. The coatings can include a substrate-coordinating functionality as well as additional functionality for interacting with the surrounding environment. For example, the coatings can be functionalized for a variety of applications such as imparting antimicrobial properties on a substrate such as an implant; drug delivery; or as an adhesive layer between a substrate and an additional coating.Type: ApplicationFiled: December 7, 2017Publication date: September 9, 2021Inventors: David M. STEVENS, Timothy T. RUCKH, Carl Eric ELMQUIST, Lu TIAN
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Publication number: 20200407514Abstract: The present disclosure relates to controlling drug release in cross-linked poly(valerolactone) based matrices. In one aspect, the compounds or pharmaceutically acceptable salts thereof include a poly(valerolactone)-co-poly(allylvalerolactone)-co-polyethylene glycol (PEG) copolymer. In some embodiments, at least a portion of allylvalerolactone residues within the copolymer are crosslinked with a crosslinker. In some embodiments, the compound has a polydispersity index of less than or equal to 1.5. In one aspect, a method is described herein, comprising: (a) polymerizing valerolactone residues, allylvalerolactone, and polyethylene glycol residues in the presence of a non-metal catalyst via a ring opening polymerization to produce a poly(valerolactone)-co-poly(allylvalerolactone)-co-polyethylene glycol copolymer; (b) crosslinking the poly(valerolactone)-co-poly(allylvalerolactone)-co-polyethylene glycol copolymer with a crosslinker; and (c) loading a drug into the crosslinked copolymer.Type: ApplicationFiled: January 17, 2020Publication date: December 31, 2020Inventors: Timothy Tordella Ruckh, Carl Eric Elmquist, David Michael Stevens, Frantz Le Dévédec, Hilary Boucher, Christine Allen
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Publication number: 20190262274Abstract: Disclosed are crosslinked particles (e.g., microparticles) that are capable of storing and releasing drugs. The particles can be macroparticles, microparticles, or nanoparticles and can be composed of polyester backbones. The particles can be loaded with a drug. The particles can degrade in vivo to release the drug. The particles can be prepared by crosslinking functionalized polyester backbones and loaded with a given drug. The particles of the present disclosure can be injected with a syringe. In some embodiments, the particles of the present disclosure are administered in connection with a surgery and release the drug after the site of the surgery for a period of 1-6 months.Type: ApplicationFiled: February 27, 2019Publication date: August 29, 2019Inventors: Frantz Le Devedec, Christine Allen, David M. Stevens, Dean James Rager-Aguiar, Timothy Tordella Ruckh, Carl Eric Elmquist
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Patent number: 10258578Abstract: Disclosed are crosslinked particles (e.g., microparticles) that are capable of storing and releasing drugs. The particles can be macroparticles, microparticles, or nanoparticles and can be composed of polyester backbones. The particles can be loaded with a drug. The particles can degrade in vivo to release the drug. The particles can be prepared by crosslinking functionalized polyester backbones and loaded with a given drug. The particles of the present disclosure can be injected with a syringe. In some embodiments, the particles of the present disclosure are administered in connection with a surgery and release the drug after the site of the surgery for a period of 1-6 months.Type: GrantFiled: October 7, 2016Date of Patent: April 16, 2019Assignee: PENDANT BIOSCIENCES, INC.Inventors: Frantz Le Dévédec, Christine Jane Allen, David M. Stevens, Dean James Rager-Aguiar, Timothy Tordella Ruckh, Carl Eric Elmquist
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Publication number: 20170100343Abstract: Disclosed are crosslinked particles (e.g., microparticles) that are capable of storing and releasing drugs. The particles can be macroparticles, microparticles, or nanoparticles and can be composed of polyester backbones. The particles can be loaded with a drug. The particles can degrade in vivo to release the drug. The particles can be prepared by crosslinking functionalized polyester backbones and loaded with a given drug. The particles of the present disclosure can be injected with a syringe. In some embodiments, the particles of the present disclosure are administered in connection with a surgery and release the drug after the site of the surgery for a period of 1-6 months.Type: ApplicationFiled: October 7, 2016Publication date: April 13, 2017Inventors: Frantz Le Dévédec, Christine Jane Allen, David Michael Stevens, Dean James Rager-Aguiar, Timothy Tordella Ruckh, Carl Eric Elmquist