Patents by Inventor Cesar M. MANNA
Cesar M. MANNA 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: 20230001631Abstract: A method of layerwise fabrication of a three-dimensional object is disclosed. The method comprises, for each of at least a few of the layers: dispensing at least a first modeling formulation and a second modeling formulation to form a core region using both the first and the second modeling formulations, and at least one envelope region at least partially surrounding the core region using one of the first and the second modeling formulations but not the other one of the first and the second modeling formulations. The method can also comprise exposing the layer to curing energy. The first modeling formulation is characterized, when hardened, by heat deflection temperature (HDT) of at least 90° C., and the second modeling formulation is characterized, when hardened, by Izod impact resistance (IR) value of at least 45 J/m.Type: ApplicationFiled: September 1, 2022Publication date: January 5, 2023Applicant: Stratasys Ltd.Inventors: Diana RAVICH, Ophira MELAMED, Avraham TEKEN, Gavish MIDA, Avraham LEVY, Cesar M. MANNA
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Patent number: 11433597Abstract: A method of layerwise fabrication of a three-dimensional object is disclosed. The method comprises, for each of at least a few of the layers: dispensing at least a first modeling formulation and a second modeling formulation to form a core region using both the first and the second modeling formulations, and at least one envelope region at least partially surrounding the core region using one of the first and the second modeling formulations but not the other one of the first and the second modeling formulations. The method can also comprise exposing the layer to curing energy. The first modeling formulation is characterized, when hardened, by heat deflection temperature (HDT) of at least 90° C., and the second modeling formulation is characterized, when hardened, by Izod impact resistance (IR) value of at least 45 J/m.Type: GrantFiled: February 26, 2020Date of Patent: September 6, 2022Assignee: Stratasys Ltd.Inventors: Diana Ravich, Ophira Melamed, Avraham Teken, Gavish Mida, Avraham Levy, Cesar M. Manna
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Publication number: 20220111585Abstract: Formulations usable in additive manufacturing of a three-dimensional object, which comprise a reinforcing material such as silica particles in an amount of from 10 to 30%, or from 15 to 20%, by weight, of the total weight of the formulation, and a designed combination of curable materials as described in the specification, is provided. Additive manufacturing of three-dimensional objects made of such a formulation and featuring enhanced mechanical properties, and objects obtained thereby are also provided.Type: ApplicationFiled: December 26, 2019Publication date: April 14, 2022Applicant: Stratasys Ltd.Inventors: Yaniv HIRSCHSOHN, Lior ZONDER, Ohad SHITRIT, Cesar M. MANNA
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Publication number: 20220055312Abstract: Methods, systems and formulations of building a three-dimensional object with a glossy surface, the method may include: selectively depositing a first material in a plurality of layers to form a body region of the three-dimensional object, wherein said first material comprises a multifunctional acrylic monomer; selectively depositing a second material in a plurality of layers to form a support region, wherein said second material comprises a monofunctional hydrophilic acrylic monomer and does not comprise a multifunctional acrylic monomer; curing each of the deposited layers, wherein in at least one of the deposited layers the first material and the second material mix to form an intermediate region at their mutual interface; dissolving the support region in an aqueous solution; and drying the body region and the intermediate region, whereby the dried intermediate region provides a glossy surface on the body region of said three-dimensional object.Type: ApplicationFiled: January 7, 2020Publication date: February 24, 2022Applicant: STRATASYS LTD.Inventors: Dani PERI, Cesar M. MANNA
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Patent number: 10994475Abstract: Methods of layerwise fabrication of a three-dimensional object, and objected obtained thereby are provided. The methods are effected by dispensing at least a first modeling formulation and a second modeling formulation to form a core region using both said first and said second modeling formulations, an inner envelope region at least partially surrounding said core region using said first modeling formulation but not said second modeling formulation, and an outer envelope region at least partially surrounding said inner envelope region using said second modeling formulations but not said first modeling formulation; and exposing said layer to curing energy, thereby fabricating the object, The first and second modeling formulations are selected such they differ from one another, when hardened, by at least one of Heat Deflection Temperature (HDT), Izod Impact resistance, Tg and elastic modulus.Type: GrantFiled: September 20, 2017Date of Patent: May 4, 2021Assignee: Stratasys Ltd.Inventors: Avraham Levy, Diana Ravich, Lior Zonder, Gil Shelef, Cesar M. Manna
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Publication number: 20200189179Abstract: A method of layerwise fabrication of a three-dimensional object is disclosed. The method comprises, for each of at least a few of the layers: dispensing at least a first modeling formulation and a second modeling formulation to form a core region using both the first and the second modeling formulations, and at least one envelope region at least partially surrounding the core region using one of the first and the second modeling formulations but not the other one of the first and the second modeling formulations. The method can also comprise exposing the layer to curing energy. The first modeling formulation is characterized, when hardened, by heat deflection temperature (HDT) of at least 90° C., and the second modeling formulation is characterized, when hardened, by Izod impact resistance (IR) value of at least 45 J/m.Type: ApplicationFiled: February 26, 2020Publication date: June 18, 2020Applicant: Stratasys Ltd.Inventors: Diana RAVICH, Ophira MELAMED, Avraham TEKEN, Gavish MIDA, Avraham LEVY, Cesar M. MANNA
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Patent number: 10589459Abstract: A method of layerwise fabrication of a three-dimensional object is disclosed. The method comprises, for each of at least a few of the layers: dispensing at least a first modeling formulation and a second modeling formulation to form a core region using both the first and the second modeling formulations, and at least one envelope region at least partially surrounding the core region using one of the first and the second modeling formulations but not the other one of the first and the second modeling formulations. The method can also comprise exposing the layer to curing energy. The first modeling formulation is characterized, when hardened, by heat deflection temperature (HDT) of at least 90° C., and the second modeling formulation is characterized, when hardened, by Izod impact resistance (IR) value of at least 45 J/m.Type: GrantFiled: September 20, 2017Date of Patent: March 17, 2020Assignee: Stratasys Ltd.Inventors: Diana Ravich, Ophira Melamed, Avraham Teken, Gavish Mida, Avraham Levy, Cesar M. Manna
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Publication number: 20200016822Abstract: Methods of layerwise fabrication of a three-dimensional object, and objected obtained thereby are provided. The methods are effected by dispensing at least a first modeling formulation and a second modeling formulation to form a core region using both said first and said second modeling formulations, an inner envelope region at least partially surrounding said core region using said first modeling formulation but not said second modeling formulation, and an outer envelope region at least partially surrounding said inner envelope region using said second modeling formulations but not said first modeling formulation; and exposing said layer to curing energy, thereby fabricating the object, The first and second modeling formulations are selected such they differ from one another, when hardened, by at least one of Heat Deflection Temperature (HDT), Izod Impact resistance, Tg and elastic modulus.Type: ApplicationFiled: September 20, 2017Publication date: January 16, 2020Applicant: Stratasys Ltd.Inventors: Avraham LEVY, Diana RAVICH, Lior ZONDER, Gil SHELEF, Cesar M. MANNA
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Publication number: 20190329488Abstract: A method of layerwise fabrication of a three-dimensional object is disclosed. The method comprises, for each of at least a few of the layers: dispensing at least a first modeling formulation and a second modeling formulation to form a core region using both the first and the second modeling formulations, and at least one envelope region at least partially surrounding the core region using one of the first and the second modeling formulations but not the other one of the first and the second modeling formulations. The method can also comprise exposing the layer to curing energy. The first modeling formulation is characterized, when hardened, by heat deflection temperature (HDT) of at least 90° C., and the second modeling formulation is characterized, when hardened, by Izod impact resistance (IR) value of at least 45 J/m.Type: ApplicationFiled: September 20, 2017Publication date: October 31, 2019Applicant: Stratasys Ltd.Inventors: Diana RAVICH, Ophira MELAMED, Avraham TEKEN, Gavish MIDA, Avraham LEVY, Cesar M. MANNA