Patents by Inventor Miwa Hashimoto
Miwa Hashimoto 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: 11130841Abstract: The purpose of the present invention is to provide an aromatic polycarbonate oligomer solid with substantially reduced low-molecular-weight components, no or a substantially reduced amount of chlorine-containing compounds, high loose bulk density, and ease of handling. The aromatic polycarbonate oligomer solid contains a repeating unit represented by formula (1), has a weight average molecular weight of 500 to 10,000, low-molecular-weight components less than or equal to 5.0 area % measured with high-speed liquid chromatography, and a loose bulk density of greater than or equal to 0.Type: GrantFiled: May 17, 2018Date of Patent: September 28, 2021Assignee: HONSHU CHEMICAL INDUSTRY CO., LTD.Inventors: Mitsutaka Ozaki, Miwa Hashimoto, Takeru Suto
-
Patent number: 11130840Abstract: An aromatic polycarbonate oligomer solid contains a repeating unit represented by formula (1) and a repeating unit represented by formula (2), has a weight average molecular weight of 500 to 10,000, low-molecular-weight components less than or equal to 5.0 area % measured with high-speed liquid chromatography, and a loose bulk density of greater than or equal to 0.25 g/cm3. wherein R1, R2, R3, and R4 are independently a hydrogen atom or an alkyl group with 1 to 4 carbon atoms, and R5 and R6 are independently a hydrogen atom or an alkyl group with 1 to 12 carbon atoms. The aromatic polycarbonate oligomer solid has a substantially reduced amount of low-molecular-weight components, no or a substantially reduced amount of chlorine-containing compounds, high loose bulk density, and ease of handling.Type: GrantFiled: May 17, 2018Date of Patent: September 28, 2021Assignee: HONSHU CHEMICAL INDUSTRY CO., LTD.Inventors: Mitsutaka Ozaki, Miwa Hashimoto, Takeru Suto, Ryoto Kano
-
Patent number: 11118009Abstract: The purpose of the present invention is to provide an aromatic polycarbonate oligomer solid with substantially reduced low-molecular-weight components, no or a substantially reduced amount of chlorine-containing compounds, high loose bulk density, and ease of handling. The aromatic polycarbonate oligomer solid contains a repeating unit represented by general formula (1), has a weight average molecular weight of 500 to 10000, low-molecular-weight components less than or equal to 5.0 area % measured with high-speed liquid chromatography, and a loose bulk density of greater than or equal to 0.30 g/cm3.Type: GrantFiled: May 17, 2018Date of Patent: September 14, 2021Assignee: HONSHU CHEMICAL INDUSTRY CO., LTD.Inventors: Mitsutaka Ozaki, Miwa Hashimoto, Takeru Suto, Ryoto Kano
-
Publication number: 20210054142Abstract: The purpose of the present invention is to provide an aromatic polycarbonate oligomer solid with substantially reduced low-molecular-weight components, no or a substantially reduced amount of chlorine-containing compounds, high loose bulk density, and ease of handling. The aromatic polycarbonate oligomer solid contains a repeating unit represented by general formula (1), has a weight average molecular weight of 500 to 10000, low-molecular-weight components less than or equal to 5.0 area % measured with high-speed liquid chromatography, and a loose bulk density of greater than or equal to 0.30 g/cm3.Type: ApplicationFiled: May 17, 2018Publication date: February 25, 2021Inventors: Mitsutaka OZAKI, Miwa HASHIMOTO, Takeru SUTO, Ryoto KANO
-
Patent number: 10662286Abstract: The purpose of the present invention is to provide an aromatic polycarbonate oligomer solid which has a markedly reduced amount of a low molecular weight component, has no or a markedly reduced amount of chlorine-containing compounds, has a high loose bulk density and is easy to handle. The purpose is met by an aromatic polycarbonate oligomer solid which includes a repeating unit represented by general formula (1), has a weight average molecular weight of 500 to 10000, has a low molecular weight component of less than or equal to 5.0 area % as measured by high performance liquid chromatography, and has a loose bulk density of greater than or equal to 0.20 g/cm3.Type: GrantFiled: November 28, 2016Date of Patent: May 26, 2020Assignee: Honchu Chemical Industry Co., Ltd.Inventors: Mitsutaka Ozaki, Miwa Hashimoto, Takahiro Onishi, Takeru Suto
-
Patent number: 10654971Abstract: The purpose of the present invention is to provide an aromatic polycarbonate oligomer solid which has a markedly reduced low molecular weight component, has no or markedly reduced chlorine-containing compounds, has a high loose bulk density and is easy to handle. This purpose is met by an aromatic polycarbonate oligomer solid which includes a repeating unit represented by general formula (1), has a weight average molecular weight of 500-10000, has a low molecular weight component of less than or equal to 5.0 area % in high performance liquid chromatography measurement, and has a loose bulk density of greater than or equal to 0.21 g/cm3.Type: GrantFiled: November 28, 2016Date of Patent: May 19, 2020Assignee: Honshu Chemical Industry Co., Ltd.Inventors: Mitsutaka Ozaki, Miwa Hashimoto, Takahiro Onishi, Takeru Suto
-
Patent number: 10655010Abstract: The purpose of the present invention is to provide an aromatic polycarbonate oligomer solid which has a markedly reduced low molecular weight component, has no or markedly reduced chlorine-containing compounds, has a high loose bulk density and is easy to handle. This purpose is met by an aromatic polycarbonate oligomer solid which includes a repeating unit represented by general formula (1), has a weight average molecular weight of 500-10000, has a low molecular weight component of less than or equal to 5.0 area % in high performance liquid chromatography measurement, and has a loose bulk density of greater than or equal to 0.Type: GrantFiled: November 28, 2016Date of Patent: May 19, 2020Assignee: Honshu Chemical Industry Co., Ltd.Inventors: Mitsutaka Ozaki, Miwa Hashimoto, Takahiro Onishi, Takeru Suto
-
Publication number: 20200115495Abstract: The purpose of the present invention is to provide an aromatic polycarbonate oligomer solid with substantially reduced low-molecular-weight components, no or a substantially reduced amount of chlorine-containing compounds, high loose bulk density, and ease of handling. The aromatic polycarbonate oligomer solid contains a repeating unit represented by formula (1), has a weight average molecular weight of 500 to 10,000, low-molecular-weight components less than or equal to 5.0 area % measured with high-speed liquid chromatography, and a loose bulk density of greater than or equal to 0.Type: ApplicationFiled: May 17, 2018Publication date: April 16, 2020Inventors: Mitsutaka OZAKI, Miwa HASHIMOTO, Takeru SUTO
-
Publication number: 20200071461Abstract: The purpose of the present invention is to provide an aromatic polycarbonate oligomer solid with substantially reduced low-molecular-weight components, no or a substantially reduced amount of chlorine-containing compounds, high loose bulk density, and ease of handling. The aromatic polycarbonate oligomer solid contains a repeating unit represented by formula (1), has a weight average molecular weight of 500 to 10,000, low-molecular-weight components less than or equal to 5.0 area % measured with high-speed liquid chromatography, and a loose bulk density of greater than or equal to 0.Type: ApplicationFiled: May 17, 2018Publication date: March 5, 2020Inventors: Mitsutaka OZAKI, Miwa HASHIMOTO, Takeru SUTO
-
Publication number: 20200071460Abstract: An aromatic polycarbonate oligomer solid contains a repeating unit represented by formula (1) and a repeating unit represented by formula (2), has a weight average molecular weight of 500 to 10,000, low-molecular-weight components less than or equal to 5.0 area % measured with high-speed liquid chromatography, and a loose bulk density of greater than or equal to 0.25 g/cm3. wherein R1, R2, R3, and R4 are independently a hydrogen atom or an alkyl group with 1 to 4 carbon atoms, and R5 and R6 are independently a hydrogen atom or an alkyl group with 1 to 12 carbon atoms. The aromatic polycarbonate oligomer solid has a substantially reduced amount of low-molecular-weight components, no or a substantially reduced amount of chlorine-containing compounds, high loose bulk density, and ease of handling.Type: ApplicationFiled: May 17, 2018Publication date: March 5, 2020Inventors: Mitsutaka OZAKI, Miwa HASHIMOTO, Takeru SUTO, Ryoto KANO
-
Publication number: 20180371161Abstract: The purpose of the present invention is to provide an aromatic polycarbonate oligomer solid which has a markedly reduced low molecular weight component, has no or markedly reduced chlorine-containing compounds, has a high loose bulk density and is easy to handle. This purpose is met by an aromatic polycarbonate oligomer solid which includes a repeating unit represented by general formula (1), has a weight average molecular weight of 500-10000, has a low molecular weight component of less than or equal to 5.0 area % in high performance liquid chromatography measurement, and has a loose bulk density of greater than or equal to 0.21 g/cm3.Type: ApplicationFiled: November 28, 2016Publication date: December 27, 2018Inventors: Mitsutaka Ozaki, Miwa Hashimoto, Takahiro Onishi, Takeru Suto
-
Publication number: 20180371236Abstract: The purpose of the present invention is to provide an aromatic polycarbonate oligomer solid which has a markedly reduced low molecular weight component, has no or markedly reduced chlorine-containing compounds, has a high loose bulk density and is easy to handle. This purpose is met by an aromatic polycarbonate oligomer solid which includes a repeating unit represented by general formula (1), has a weight average molecular weight of 500-10000, has a low molecular weight component of less than or equal to 5.0 area % in high performance liquid chromatography measurement, and has a loose bulk density of greater than or equal to 0.30 g/cm3.Type: ApplicationFiled: November 28, 2016Publication date: December 27, 2018Inventors: Mitsutaka Ozaki, Miwa Hashimoto, Takahiro Onishi, Takeru Suto
-
Publication number: 20180362708Abstract: The purpose of the present invention is to provide an aromatic polycarbonate oligomer solid which has a markedly reduced amount of a low molecular weight component, has no or a markedly reduced amount of chlorine-containing compounds, has a high loose bulk density and is easy to handle. The purpose is met by an aromatic polycarbonate oligomer solid which includes a repeating unit represented by general formula (1), has a weight average molecular weight of 500 to 10000, has a low molecular weight component of less than or equal to 5.0 area % as measured by high performance liquid chromatography, and has a loose bulk density of greater than or equal to 0.20 g/cm3.Type: ApplicationFiled: November 28, 2016Publication date: December 20, 2018Inventors: Mitsutaka Ozaki, Miwa Hashimoto, Takahiro Onishi, Takeru Suto