Patents by Inventor LEV KUNO
LEV KUNO 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: 20230391998Abstract: Curable formulations which are usable in additive manufacturing of three-dimensional objects using a transparent material, and which can be advantageously usable in additive manufacturing systems that utilize a LED curing source are provided. Additive manufacturing processes using same and objects made thereby are also provided.Type: ApplicationFiled: October 21, 2021Publication date: December 7, 2023Applicant: Stratasys Ltd.Inventors: Lev KUNO, Mariana POKRASS, Elena SHPAYZER, Dani PERI
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Publication number: 20230391002Abstract: A method of treating an object fabricated from a modeling material by additive manufacturing, comprises exposing the object to visible light having a peak wavelength less than 470 nm, and to a temperature of less than a heat deflection temperature (HDT) of the modeling material.Type: ApplicationFiled: October 21, 2021Publication date: December 7, 2023Applicant: Stratasys Ltd.Inventors: Lev KUNO, Mariana POKRASS, Diana RAVICH, Gil SHELEF
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Publication number: 20230226747Abstract: A formulation system usable in additive manufacturing of a three-dimensional object that comprises, in at least a portion thereof, a cyanate ester-containing polymeric network, and additive manufacturing processes employing the formulation system are provided. Also provided are objects obtainable by the additive manufacturing and kits containing the formulation system. The formulation system includes a first modeling material formulation which includes a first curable material which is a thermally-curable cyanate ester and a second modeling material formulation which comprises an activating agent for promoting polymerization of the cyanate ester and is devoid of the first curable material, and further includes a second curable material which is different from the first curable material, and optionally an agent for promoting hardening of the second curable material.Type: ApplicationFiled: March 27, 2023Publication date: July 20, 2023Applicant: Stratasys Ltd.Inventor: Lev KUNO
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Patent number: 11655386Abstract: Methods for fabricating three-dimensional objects by 3D-inkjet printing technology are provided. The methods utilize curable materials that polymerize via ring-opening metathesis polymerization (ROMP) in combination with toughening agents for fabricating the object. Systems suitable for performing these methods and kits containing modeling material formulations usable in the methods are also provided.Type: GrantFiled: April 27, 2021Date of Patent: May 23, 2023Assignee: Stratasys Ltd.Inventors: Yuval Vidavsky, Lev Kuno
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Publication number: 20230151239Abstract: Methods for fabricating three-dimensional objects by 3D-inkjet printing technology are provided. The methods utilize curable materials that polymerize via ring-opening metathesis polymerization (ROMP) in combination with toughening agents for fabricating the object. Systems suitable for performing these methods and kits containing modeling material formulations usable in the methods are also provided.Type: ApplicationFiled: January 5, 2023Publication date: May 18, 2023Applicant: Stratasys Ltd.Inventors: Yuval VIDAVSKY, Lev KUNO
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Patent number: 11613071Abstract: A formulation system usable in additive manufacturing of a three-dimensional object that comprises, in at least a portion thereof, a cyanate ester-containing polymeric network, and additive manufacturing processes employing the formulation system are provided. Also provided are objects obtainable by the additive manufacturing and kits containing the formulation system. The formulation system includes a first modeling material formulation which includes a first curable material which is a thermally-curable cyanate ester and a second modeling material formulation which comprises an activating agent for promoting polymerization of the cyanate ester and is devoid of the first curable material, and further includes a second curable material which is different from the first curable material, and optionally an agent for promoting hardening of the second curable material.Type: GrantFiled: December 24, 2021Date of Patent: March 28, 2023Assignee: Stratasys Ltd.Inventor: Lev Kuno
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Publication number: 20220379548Abstract: Provided are methods of fabricating an object, effected by jetting two or more different compositions, each containing a different material or mixture of materials, which, when contacted on a receiving medium, undergo a chemical reaction therebetween to form the building material. The chemical composition of the formed building material is dictated by a ratio of the number of voxels of each composition in a voxel block. Systems for executing the methods, and printed objects obtained thereby are also provided.Type: ApplicationFiled: August 1, 2022Publication date: December 1, 2022Applicant: Stratasys Ltd.Inventors: Eynat MATZNER, Ira YUDOVIN-FARBER, Shai HIRSCH, Lev KUNO
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Publication number: 20220324179Abstract: A method of additive manufacturing (AM) includes dispensing a first building material formulation to form an outer region, and dispensing a second building material formulation to form an inner region, the outer region surrounding the inner region, the inner and outer regions being shaped to form a layer of the object; exposing the layer to a first curing condition, repeating the dispensing and the exposing to sequentially form a plurality of layers of the object and collectively exposing the plurality of layers to a second curing condition. The selections are such that the first building material formulation is hardened to a higher degree than the second building formulation. The outer regions form a hardened coating that at least partially encapsulates the inner regions. The second curing condition is other than the first curing condition and is selected to increase the degree that the inner region is hardened.Type: ApplicationFiled: June 22, 2022Publication date: October 13, 2022Applicant: Stratasys Ltd.Inventors: Mariana POKRASS, Lev KUNO, Eviatar GOLAN, Oren ZORAN
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Patent number: 11376799Abstract: A method of additive manufacturing (AM) includes dispensing a first building material formulation to form an outer region, and dispensing a second building material formulation to form an inner region, the outer region surrounding the inner region, the inner and outer regions being shaped to form a layer of the object; exposing the layer to a first curing condition, repeating the dispensing and the exposing to sequentially form a plurality of layers of the object and collectively exposing the plurality of layers to a second curing condition. The selections are such that the first building material formulation is hardened to a higher degree than the second building formulation. The outer regions form a hardened coating that at least partially encapsulates the inner regions. The second curing condition is other than the first curing condition and is selected to increase the degree that the inner region is hardened.Type: GrantFiled: September 27, 2019Date of Patent: July 5, 2022Assignee: Stratasys Ltd.Inventors: Mariana Pokrass, Lev Kuno, Eviatar Golan, Oren Zoran
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Publication number: 20220204761Abstract: Modeling material formulations usable for forming a polyurea material in additive manufacturing, and methods for additive manufacturing of three-dimensional objects made of these formulations are provided. The modeling material formulation comprises at least one isocyanate-containing material and at least one amine-containing material such that at least one isocyanate-containing material comprises at least one polyisocyanate material and at least one amine-containing material comprises at least one aromatic polyamine material.Type: ApplicationFiled: April 1, 2020Publication date: June 30, 2022Applicant: Stratasys Ltd.Inventors: Lev KUNO, Avraham LEVY, Laurent BENISVY
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Publication number: 20220118682Abstract: A formulation system usable in additive manufacturing of a three-dimensional object that comprises, in at least a portion thereof, a cyanate ester-containing polymeric network, and additive manufacturing processes employing the formulation system are provided. Also provided are objects obtainable by the additive manufacturing and kits containing the formulation system. The formulation system includes a first modeling material formulation which includes a first curable material which is a thermally-curable cyanate ester and a second modeling material formulation which comprises an activating agent for promoting polymerization of the cyanate ester and is devoid of the first curable material, and further includes a second curable material which is different from the first curable material, and optionally an agent for promoting hardening of the second curable material.Type: ApplicationFiled: December 24, 2021Publication date: April 21, 2022Applicant: Stratasys Ltd.Inventor: Lev KUNO
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Publication number: 20220040913Abstract: Formulation systems usable for fabricating a three-dimensional object made of a polyamide-containing material, by three-dimensional 3D inkjet printing, and methods and systems utilizing same, are provided. The formulation systems are formed of at least a first and second model formulations containing a lactam and a catalyst for inducing anionic ring opening polymerization of the lactam in the first formulation, and an activator for promoting anionic ring opening polymerization of the lactam in the second formulation, and are further characterized as: including in the first and/or second formulation a compound capable of increasing a rate of said polymerization upon exposure to said curing energy; including as an activator a lactam-blocked polyisocyanate; and/or as including in the first model formulation at least one material capable of reducing a melting point of said first model formulation. Formulation systems usable at a selected ratio are also provided.Type: ApplicationFiled: October 26, 2021Publication date: February 10, 2022Applicant: Stratasys Ltd.Inventors: Lev KUNO, Ira YUDOVIN-FARBER, Liora DAMARI, Eynat MATZNER
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Patent number: 11235511Abstract: A formulation system usable in additive manufacturing of a three-dimensional object that comprises, in at least a portion thereof, a cyanate ester-containing polymeric network, and additive manufacturing processes employing the formulation system are provided. Also provided are objects obtainable by the additive manufacturing and kits containing the formulation system. The formulation system includes a first modeling material formulation which includes a first curable material which is a thermally-curable cyanate ester and a second modeling material formulation which comprises an activating agent for promoting polymerization of the cyanate ester and is devoid of the first curable material, and further includes a second curable material which is different from the first curable material, and optionally an agent for promoting hardening of the second curable material.Type: GrantFiled: September 27, 2019Date of Patent: February 1, 2022Assignee: Stratasys Ltd.Inventor: Lev Kuno
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Publication number: 20210354398Abstract: A method of additive manufacturing (AM) includes dispensing a first building material formulation to form an outer region, and dispensing a second building material formulation to form an inner region, the outer region surrounding the inner region, the inner and outer regions being shaped to form a layer of the object; exposing the layer to a first curing condition, repeating the dispensing and the exposing to sequentially form a plurality of layers of the object and collectively exposing the plurality of layers to a second curing condition. The selections are such that the first building material formulation is hardened to a higher degree than the second building formulation. The outer regions form a hardened coating that at least partially encapsulates the inner regions. The second curing condition is other than the first curing condition and is selected to increase the degree that the inner region is hardened.Type: ApplicationFiled: September 27, 2019Publication date: November 18, 2021Applicant: Stratasys Ltd.Inventors: Mariana POKRASS, Lev KUNO, Eviatar GOLAN, Oren ZORAN
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Patent number: 11173653Abstract: Formulation systems usable for fabricating a three-dimensional object made of a polyamide-containing material, by three-dimensional 3D inkjet printing, and methods and systems utilizing same, are provided. The formulation systems are formed of at least a first and second model formulations containing a lactam and a catalyst for inducing anionic ring opening polymerization of the lactam in the first formulation, and an activator for promoting anionic ring opening polymerization of the lactam in the second formulation, and are further characterized as: including in the first and/or second formulation a compound capable of increasing a rate of said polymerization upon exposure to said curing energy; including as an activator a lactam-blocked polyisocyanate; and/or as including in the first model formulation at least one material capable of reducing a melting point of said first model formulation. Formulation systems usable at a selected ratio are also provided.Type: GrantFiled: February 5, 2017Date of Patent: November 16, 2021Assignee: Stratasys Ltd.Inventors: Lev Kuno, Ira Yudovin-Farber, Liora Damari, Eynat Matzner
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Publication number: 20210308938Abstract: A formulation system usable in additive manufacturing of a three-dimensional object that comprises, in at least a portion thereof, a cyanate ester-containing polymeric network, and additive manufacturing processes employing the formulation system are provided. Also provided are objects obtainable by the additive manufacturing and kits containing the formulation system. The formulation system includes a first modeling material formulation which includes a first curable material which is a thermally-curable cyanate ester and a second modeling material formulation which comprises an activating agent for promoting polymerization of the cyanate ester and is devoid of the first curable material, and further includes a second curable material which is different from the first curable material, and optionally an agent for promoting hardening of the second curable material.Type: ApplicationFiled: September 27, 2019Publication date: October 7, 2021Applicant: Stratasys Ltd.Inventor: Lev KUNO
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Patent number: 11118004Abstract: Methods for fabricating three-dimensional objects by 3D-inkjet printing technology are provided. The methods utilize curable materials that polymerize via ring-opening metathesis polymerization (ROMP) for fabricating the object, in combination with acid-activatable pre-catalyst and an acid generator activator. Kits containing modeling material formulations usable in the methods are also provided.Type: GrantFiled: February 5, 2017Date of Patent: September 14, 2021Assignee: Stratasys Ltd.Inventors: Yuval Vidavsky, Ira Yudovin-Farber, Asher Razlan, Lev Kuno, Gilles Recher, Renata Drozdzak-Matusiak
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Publication number: 20210269663Abstract: Methods for fabricating three-dimensional objects by 3D-inkjet printing technology are provided. The methods utilize curable materials that polymerize via ring-opening metathesis polymerization (ROMP) in combination with toughening agents for fabricating the object. Systems suitable for performing these methods and kits containing modeling material formulations usable in the methods are also provided.Type: ApplicationFiled: April 27, 2021Publication date: September 2, 2021Applicant: Stratasys Ltd.Inventors: Yuval VIDAVSKY, Lev KUNO
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Patent number: 11001725Abstract: Methods for fabricating three-dimensional objects by 3D-inkjet printing technology are provided. The methods utilize curable materials that polymerize via ring-opening metathesis polymerization (ROMP) in combination with toughening agents for fabricating the object. Systems suitable for performing these methods and kits containing modeling material formulations usable in the methods are also provided.Type: GrantFiled: February 5, 2017Date of Patent: May 11, 2021Assignee: Stratasys Ltd.Inventors: Yuval Vidavsky, Ira Yudovin-Farber, Asher Razlan, Lev Kuno, Eynat Matzner
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Publication number: 20210070941Abstract: Formulations usable in additive manufacturing, 3D inkjet printing in particular, of a three-dimensional object that contains a polyimide material, and additive manufacturing utilizing same are provided. The formulations contain a polyimide precursor (e.g., a bismaleimide) and an additional curable material, which is a multifunctional curable material, and are devoid of an organic solvent.Type: ApplicationFiled: December 27, 2018Publication date: March 11, 2021Applicant: Stratasys Ltd.Inventors: Lev KUNO, Mariana POKRASS, Elena SHPAYZER