Patents by Inventor Stephen BUCHANAN
Stephen BUCHANAN 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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Publication number: 20230360560Abstract: A training system for dental procedures having a training device and a self-assessment for use with the training device is described. The training device is printed with a 3D printer and includes a predetermined anatomic form of at least a portion of a human jaw structure and a predetermined anatomic form of at least one human tooth structure. Part of the printed human tooth structure is rooted in the printed human jaw structure, and both structures are designed to have at least one analogous physical property to their corresponding human structures. The self-assessment includes a pictorial array of procedural outcomes of a procedural step so that a user can identify which image in the pictorial array best represents the user's own procedural outcome of the procedural step performed by the user on the training device and at least one feedback instruction.Type: ApplicationFiled: March 13, 2023Publication date: November 9, 2023Inventor: L. Stephen Buchanan
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Patent number: 11807022Abstract: A method of forming an image on a substrate that includes applying a radiation curable analog ink composition by an analog printing method onto a surface of the substrate to form a coated substrate, applying a radiation curable inkjet ink composition by a digital printing method onto the coated substrate while the radiation curable analog ink composition is still wet to form a hybrid coated substrate, and exposing to electron beam radiation. A method of forming an image on a substrate that includes applying a radiation curable inkjet ink composition by a digital printing method onto a surface of the substrate to form a coated substrate, applying a radiation curable analog ink composition by an analog printing method onto the coated substrate while the radiation curable inkjet ink composition is still wet to form a hybrid coated substrate, and exposing to electron beam radiation.Type: GrantFiled: September 4, 2019Date of Patent: November 7, 2023Assignee: Kao CorporationInventors: Muslim Contractor, Stephen Buchanan, Stephen Cummings
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Patent number: 11717388Abstract: This invention relates to a negative pressure irrigation system including one or more negative pressure irrigation needles sized for insertion into a canal of a tooth, each needle having a closed distal end and two suction inlet ports located opposite one another immediately proximal to the closed distal end. The needles are placed in communication with a dental vacuum system by way of a suction manifold. An irrigant inlet tube supplies irrigant from an irrigant container into a pulp chamber or a tooth. The irrigant inlet tube may include a tapered end designed to tightly fit into a lateral irrigant supply port previously drilled into the pulp chamber. A light-cure polymer seals the inlet tube and needles when in use.Type: GrantFiled: September 21, 2020Date of Patent: August 8, 2023Inventor: L. Stephen Buchanan
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Publication number: 20230135573Abstract: Embodiments of this disclosure provide a staging assembly (10) for negative pressure, multi-canal irrigation of a root canal system followed by obturation. The staging assembly may be part of a kit that includes a plurality of catheters (50) sized for insertion into the root canal system. To hold the catheter in its proper position in the canal, the catheter may include a stop (37) and the staging assembly may include a corresponding stop hold (36). The distal end (51) of the catheter can be positioned 2 mm to 5 mm from the terminus end of the root canal. The staging assembly is then sealed, creating a closed system. Irrigating solution is vacuum-drawn out the ends of the catheters and debris is evacuated through a vacuum port of the stating assembly. During irrigation, no hands on time is required by the clinician. After irrigation, vacuum is reversed to dry the canal. Obturation occurs through the vacuum portion.Type: ApplicationFiled: March 10, 2021Publication date: May 4, 2023Inventor: L. Stephen Buchanan
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Patent number: 11605310Abstract: A training system for dental procedures having a training device and a self-assessment for use with the training device is described. The training device is printed with a 3D printer and includes a predetermined anatomic form of at least a portion of a human jaw structure and a predetermined anatomic form of at least one human tooth structure. Part of the printed human tooth structure is rooted in the printed human jaw structure, and both structures are designed to have at least one analogous physical property to their corresponding human structures. The self-assessment includes a pictorial array of procedural outcomes of a procedural step so that a user can identify which image in the pictorial array best represents the user's own procedural outcome of the procedural step performed by the user on the training device and at least one feedback instruction.Type: GrantFiled: June 28, 2021Date of Patent: March 14, 2023Assignee: Dental Education Laboratories, Inc.Inventor: L. Stephen Buchanan
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Publication number: 20230075719Abstract: An aqueous energy curable inkjet ink that includes (A) an emulsified water-insoluble photopolymerizable compound, (B) a resin, which may be (B1) a photopolymerizable resin or (B2) a non-photopolymerizable resin, (C) a polyether macromer-modified poly(meth)acrylate, and (D) at least 25 wt. % water, based on a total weight of the aqueous energy curable inkjet ink. A printed article including the aqueous energy curable inkjet ink in dried and cured form, and a method of forming a printed image with an inkjet printhead are also provided.Type: ApplicationFiled: January 10, 2020Publication date: March 9, 2023Applicant: Kao CorporationInventors: Muslim H. CONTRACTOR, Spencer Q. TORLINE, Stephen J. CUMMINGS, Stephen BUCHANAN
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Publication number: 20230048141Abstract: An aqueous energy curable inkjet ink that includes (A) a non-photopolymerizable resin, (B) a water-soluble photopolymerizable monomer, (C) a pigment having an average particle size of 50 to 300 nm, and (D) at least 25 wt. % water, based on a total weight of the aqueous energy curable inkjet ink. A printed article including the aqueous energy curable inkjet ink in dried and cured form, and a method of forming a printed image with an inkjet printhead are also provided.Type: ApplicationFiled: January 10, 2020Publication date: February 16, 2023Applicant: Kao CorporationInventors: Muslim H. CONTRACTOR, Spencer Q. TORLINE, Stephen J. CUMMINGS, Stephen BUCHANAN
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Patent number: 11479684Abstract: A radiation curable inkjet ink composition that includes (A) a mono-ethylenically unsaturated oligomer, (B) a mono-ethylenically unsaturated monomer, and (C) a solvent, wherein the radiation curable inkjet ink composition is substantially free of a photoinitiator and wherein a total weight of the mono-ethylenically unsaturated oligomer (A) is less than or equal to the total weight of the mono-ethylenically unsaturated monomer (B). A printed article including the radiation curable inkjet ink composition in cured form, and a method of forming an image with a thermal inkjet printhead are also provided.Type: GrantFiled: April 17, 2019Date of Patent: October 25, 2022Assignee: Kao CorporationInventors: Muslim Contractor, Stan Nowacki, Stephen Buchanan, Stephen Cummings
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Patent number: 11471249Abstract: A self-heating electric plugger/syringe needle (10/70) with the conductive element (50) on the external surface of the needle (10/70) is described. The needle (10/70), which can be divided into shank (30) and tip (20) portions, is hollow and is made of an electrically resistive material. A conductive element (50) located on the external surface of the needle runs along the length of its shank (30) and the length of its tip (20). An insulating material (60) located between the conductive element (50) and the external surface of the needle runs along the length of the shank (30). The conductive element (50) contacts the tip (20) of the needle, causing the needle to self-heat when electric current is supplied. A method for filling a root canal using the self-heating electric plugger/syringe needle (10/70) is also described.Type: GrantFiled: August 3, 2020Date of Patent: October 18, 2022Assignee: Dental Education Laboratories, Inc.Inventor: L. Stephen Buchanan
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Patent number: 11312170Abstract: A method of forming an image on a substrate that involves applying a radiation curable white inkjet ink composition comprising a radiation curable anti-wrinkle agent onto a surface of the substrate, exposing the radiation curable white inkjet ink composition to UV light having a wavelength of less than 200 nm to pin the radiation curable white inkjet ink composition and form a coated substrate having an arithmetical mean surface roughness value Ra of less than or equal to 2.0 micrometers and an arithmetical mean surface roughness depth Rz of less than or equal to 10.0 micrometers, applying a radiation curable CMYK inkjet ink composition onto the coated substrate, and curing with electron beam radiation.Type: GrantFiled: April 4, 2019Date of Patent: April 26, 2022Assignee: Kao CorporationInventors: Muslim Contractor, Stephen Buchanan, Stephen Cummings
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Publication number: 20220111673Abstract: A method of forming an image on a substrate that includes applying a radiation curable analog ink composition by an analog printing method onto a surface of the substrate to form a coated substrate, applying a radiation curable inkjet ink composition by a digital printing method onto the coated substrate while the radiation curable analog ink composition is still wet to form a hybrid coated substrate, and exposing to electron beam radiation. A method of forming an image on a substrate that includes applying a radiation curable inkjet ink composition by a digital printing method onto a surface of the substrate to form a coated substrate, applying a radiation curable analog ink composition by an analog printing method onto the coated substrate while the radiation curable inkjet ink composition is still wet to form a hybrid coated substrate, and exposing to electron beam radiation.Type: ApplicationFiled: September 4, 2019Publication date: April 14, 2022Applicant: Kao CorporationInventors: Muslim CONTRACTOR, Stephen BUCHANAN, Stephen CUMMINGS
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Publication number: 20210398453Abstract: A training system for dental procedures having a training device and a self-assessment for use with the training device is described. The training device is printed with a 3D printer and includes a predetermined anatomic form of at least a portion of a human jaw structure and a predetermined anatomic form of at least one human tooth structure. Part of the printed human tooth structure is rooted in the printed human jaw structure, and both structures are designed to have at least one analogous physical property to their corresponding human structures. The self-assessment includes a pictorial array of procedural outcomes of a procedural step so that a user can identify which image in the pictorial array best represents the user's own procedural outcome of the procedural step performed by the user on the training device and at least one feedback instruction.Type: ApplicationFiled: June 28, 2021Publication date: December 23, 2021Inventor: L. Stephen Buchanan
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Patent number: 11193027Abstract: A radiation curable ink composition that includes (A) a mono-ethylenically unsaturated oligomer, (B) a mono-ethylenically unsaturated monomer, and (C) an acrylate ester of a carboxylic acid ester and which is substantially free of a photoinitiator. A printed article including the radiation curable ink composition in cured form, and a method of forming an image with the radiation curable ink composition are also provided.Type: GrantFiled: March 26, 2018Date of Patent: December 7, 2021Assignee: Kao CorporationInventors: Muslim Contractor, Stephen Cummings, Stephen Buchanan
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Patent number: 11049415Abstract: A training system for dental procedures having a training device and a self-assessment for use with the training device is described. The training device is printed with a 3D printer and includes a predetermined anatomic form of at least a portion of a human jaw structure and a predetermined anatomic form of at least one human tooth structure. Part of the printed human tooth structure is rooted in the printed human jaw structure, and both structures are designed to have at least one analogous physical property to their corresponding human structures. The self-assessment includes a pictorial array of procedural outcomes of a procedural step so that a user can identify which image in the pictorial array best represents the user's own procedural outcome of the procedural step performed by the user on the training device and at least one feedback instruction.Type: GrantFiled: December 5, 2016Date of Patent: June 29, 2021Assignee: Dental Education Laboratories, Inc.Inventor: L. Stephen Buchanan
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Publication number: 20210059799Abstract: This invention relates to a negative pressure irrigation system including one or more negative pressure irrigation needles sized for insertion into a canal of a tooth, each needle having a closed distal end and two suction inlet ports located opposite one another immediately proximal to the closed distal end. The needles are placed in communication with a dental vacuum system by way of a suction manifold. An irrigant inlet tube supplies irrigant from an irrigant container into a pulp chamber or a tooth. The irrigant inlet tube may include a tapered end designed to tightly fit into a lateral irrigant supply port previously drilled into the pulp chamber. A light-cure polymer seals the inlet tube and needles when in use.Type: ApplicationFiled: September 21, 2020Publication date: March 4, 2021Inventor: L. Stephen Buchanan
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Publication number: 20210045841Abstract: A self-heating electric plugger/syringe needle (10/70) with the conductive element (50) on the external surface of the needle (10/70) is described. The needle (10/70), which can be divided into shank (30) and tip (20) portions, is hollow and is made of an electrically resistive material. A conductive element (50) located on the external surface of the needle runs along the length of its shank (30) and the length of its tip (20). An insulating material (60) located between the conductive element (50) and the external surface of the needle runs along the length of the shank (30). The conductive element (50) contacts the tip (20) of the needle, causing the needle to self-heat when electric current is supplied. A method for filling a root canal using the self-heating electric plugger/syringe needle (10/70) is also described.Type: ApplicationFiled: August 3, 2020Publication date: February 18, 2021Inventor: L. Stephen Buchanan
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Publication number: 20210040338Abstract: A radiation curable inkjet ink composition that includes (A) a mono-ethylenically unsaturated oligomer, (B) a mono-ethylenically unsaturated monomer, and (C) a solvent, wherein the radiation curable inkjet ink composition is substantially free of a photoinitiator and wherein a total weight of the mono-ethylenically unsaturated oligomer (A) is less than or equal to the total weight of the mono-ethylenically unsaturated monomer (B). A printed article including the radiation curable inkjet ink composition in cured form, and a method of forming an image with a thermal inkjet printhead are also provided.Type: ApplicationFiled: April 17, 2019Publication date: February 11, 2021Applicant: Kao CorporationInventors: Muslim CONTRACTOR, Stan NOWACKI, Stephen BUCHANAN, Stephen CUMMINGS
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Publication number: 20200407574Abstract: A method of forming an image on a substrate that involves applying a radiation curable white inkjet ink composition comprising a radiation curable anti-wrinkle agent onto a surface of the substrate, exposing the radiation curable white inkjet ink composition to UV light having a wavelength of less than 200 nm to pin the radiation curable white inkjet ink composition and form a coated substrate having an arithmetical mean surface roughness value Ra of less than or equal to 2.0 micrometers and an arithmetical mean surface roughness depth Rz of less than or equal to 10.0 micrometers, applying a radiation curable CMYK inkjet ink composition onto the coated substrate, and curing with electron beam radiation.Type: ApplicationFiled: April 4, 2019Publication date: December 31, 2020Applicant: Kao CorporationInventors: Muslim CONTRACTOR, Stephen BUCHANAN, Stephen CUMMINGS
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Patent number: 10779920Abstract: This invention relates to a negative pressure irrigation system including one or more negative pressure irrigation needles sized for insertion into a canal of a tooth, each needle having a closed distal end and two suction inlet ports located opposite one another immediately proximal to the closed distal end. The needles are placed in communication with a dental vacuum system by way of a suction manifold. An irrigant inlet tube supplies irrigant from a irrigant container into a pulp chamber or a tooth. The irrigant inlet tube may include a tapered end designed to tightly fit into a lateral irrigant supply port previously drilled into the pulp chamber. A light-cure polymer seals the inlet tube and needles when in use.Type: GrantFiled: December 5, 2016Date of Patent: September 22, 2020Inventor: L. Stephen Buchanan
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Patent number: 10729514Abstract: A self-heating electric plugger/syringe needle (10/70) with the conductive element (50) on the external surface of the needle (10/70) is described. The needle (10/70), which can be divided into shank (30) and tip (20) portions, is hollow and is made of an electrically resistive material. A conductive element (50) located on the external surface of the needle runs along the length of its shank (30) and the length of its tip (20). An insulating material (60) located between the conductive element (50) and the external surface of the needle runs along the length of the shank (30). The conductive element (50) contacts the tip (20) of the needle, causing the needle to self-heat when electric current is supplied. A method for filling a root canal using the self-heating electric plugger/syringe needle (10/70) is also described.Type: GrantFiled: December 5, 2016Date of Patent: August 4, 2020Assignee: Dental Education Laboratories, Inc.Inventor: L. Stephen Buchanan