Inventor · disambiguated record
Toshio Takizawa
Also filed as: TAKIZAWA TOSHIO
33 granted patents·7 pending applications·364 citations·filing 1983–2025
97Inventor score
Files withHOYA CORP16MEIJI SEIKA KAISHA6HITACHI CHEMICAL CO LTD4ITAYA MASANOBU4OKI ELECTRIC IND CO LTD3
Top patents by PatentIndex Score
40 records- 0192US11587585B2Magnetic-disk substrate and magnetic diskITAYA MASANOBU·Filed 2021·Granted Feb 21, 2023·3 cites·20 claims
- 0291US11214713B2Polishing liquid, method for manufacturing glass substrate, and method for manufacturing magnetic diskHOYA CORP·Filed 2018·Granted Jan 4, 2022·3 cites·20 claims
- 0390US8241768B2Magnetic disk substrate, magnetic disk, and magnetic disk deviceTAKIZAWA TOSHIO·Filed 2008·Granted Aug 14, 2012·25 cites·12 claims
- 0488US9564166B2Magnetic-disk glass substrate and magnetic diskITAYA MASANOBU·Filed 2013·Granted Feb 7, 2017·8 cites·16 claims
- 0584US12252633B2Polishing liquid and method for manufacturing glass substrateHOYA CORP·Filed 2023·Granted Mar 18, 2025·0 cites·16 claims
- 0683US11680187B2Polishing liquid, method for manufacturing glass substrate, and method for manufacturing magnetic diskHOYA CORP·Filed 2021·Granted Jun 20, 2023·0 cites·20 claims
- 0783US2025391437A1Disk-shaped glass substrate manufacturing method, glass substrate manufacturing method, magnetic-disk glass substrate manufacturing method, and glass substrateHOYA CORP·Filed 2025·Application pending·0 cites
- 0880US10283156B2Magnetic-disk substrate and magnetic diskITAYA MASANOBU·Filed 2017·Granted May 7, 2019·3 cites·8 claims
- 0978US11081134B2Hard disk drive with magnetic-disk substrate and hard disk drive with magnetic diskHOYA CORP·Filed 2019·Granted Aug 3, 2021·2 cites·16 claims
- 1078US9183866B2Magnetic disk substrate with offset portion on a main surface within a range of 92.0 to 97.0% in a radial direction from a center, magnetic disk with substrate and magnetic disk deviceHOYA CORP·Filed 2014·Granted Nov 10, 2015·3 cites·5 claims
- 1178US5146068ASystem for authenticating an authorized user of an IC cardOKI ELECTRIC IND CO LTD·Filed 1990·Granted Sep 8, 1992·123 cites·4 claims
- 1277US12365815B2Polishing liquid, polishing liquid set, polishing method, and defect suppression methodRESONAC CORP·Filed 2023·Granted Jul 22, 2025·0 cites·18 claims
- 1373US8986859B2Magnetic disk substrate, magnetic disk, and magnetic disk deviceTAKIZAWA TOSHIO·Filed 2012·Granted Mar 24, 2015·2 cites·9 claims
- 1472US12094506B2Magnetic-disk substrate and magnetic diskITAYA MASANOBU·Filed 2023·Granted Sep 17, 2024·0 cites·20 claims
- 1572US9697861B2Magnetic disk substrate with specified changes in height or depth between adjacent raised or lowered portions and an offset portion on a main surface within a range of 92.0 to 97.0% in a radial direction from a center, a magnetic disk with substrate and a magnetic disk device with magnetic diskHOYA CORP·Filed 2015·Granted Jul 4, 2017·2 cites·8 claims
- 1672US5070233AIc card reader/writer and ic card transactions processing apparatus capable of producing various frequency clock pulsesOKI ELECTRIC IND CO LTD·Filed 1989·Granted Dec 3, 1991·35 cites·4 claims
- 1772US2025191612A1Magnetic disk substrate and magnetic diskHOYA CORP·Filed 2025·Application pending·0 cites
- 1871US10155886B2Polishing liquid for CMP, and polishing methodHITACHI CHEMICAL CO LTD·Filed 2014·Granted Dec 18, 2018·2 cites·11 claims
- 1971US6197758B1Methods for supplying postgastrectomic mineral and methods for treating postgastrectomic syndromeMEIJI SEIKA KAISHA·Filed 1997·Granted Mar 6, 2001·33 cites·14 claims
- 2071USD279825SElectric shaverIZUMI SEIMITSU KOGYO KK·Filed 1983·Granted Jul 23, 1985·11 cites·1 claims
- 2170US12406694B2Magnetic disk-use glass substrate manufacturing method, discoidal glass substrate, glass substrate, and magnetic disk-use glass substrateHOYA CORP·Filed 2023·Granted Sep 2, 2025·0 cites·13 claims
- 2270US6387425B1Method for producing low potassium juice with improved taste and product thereofMEIJI SEIKA KAISHA·Filed 2000·Granted May 14, 2002·7 cites·14 claims
- 2365US10607647B2Magnetic disk substrate with specified changes in height or depth between adjacent raised or lowered portions and an offset portion on a main surface within a range of 92.0 to 97.0% in a radial direction from a center, a magnetic disk with substrate and magnetic disk deviceHOYA CORP·Filed 2017·Granted Mar 31, 2020·1 cites·24 claims
- 2464US12266389B2Magnetic disk substrate, magnetic disk, annular-shaped substrate, and method for manufacturing magnetic disk substrateHOYA CORP·Filed 2022·Granted Apr 1, 2025·0 cites·18 claims
- 2560US5900255AMaterial for prevention and treatment of osteoporosisMEIJI SEIKA KAISHA·Filed 1997·Granted May 4, 1999·15 cites·20 claims
- 2658US2024174556A1Method for manufacturing annular glass substrate, annular glass substrate, and method for manufacturing glass substrate for magnetic discHOYA CORP·Filed 2022·Application pending·0 cites
- 2754US6248362B1Large intestinal delivery compositeMEIJI SEIKA KAISHA·Filed 1998·Granted Jun 19, 2001·16 cites·24 claims
- 2853US9038417B2Method for producing glass substrate for magnetic disk and method for manufacturing magnetic diskHOYA CORP·Filed 2014·Granted May 26, 2015·0 cites·7 claims
- 2952US8763428B2Method for producing glass substrate for magnetic disk and method for manufacturing magnetic diskTAKIZAWA TOSHIO·Filed 2007·Granted Jul 1, 2014·0 cites·16 claims
- 3052US2020283659A1Polishing liquid, polishing liquid set, polishing method, anddefect suppression methodHITACHI CHEMICAL CO LTD·Filed 2018·Application pending·0 cites
- 3151US5267315ASecret identification number checking systemOKI ELECTRIC IND CO LTD·Filed 1989·Granted Nov 30, 1993·63 cites·11 claims
- 3249US11926764B2Polishing solution, polishing solution set, polishing method, and defect suppressing methodSHOWA DENKO MATERIALS CO LTD·Filed 2019·Granted Mar 12, 2024·0 cites·30 claims
- 3348US2017133237A1Polishing liquid and method for polishing substrate using the polishing liquidHITACHI CHEMICAL CO LTD·Filed 2016·Application pending·0 cites
- 3447US12344545B2Method for manufacturing glass plate, method for manufacturing magnetic-disk glass substrate, and method for manufacturing magnetic diskHOYA CORP·Filed 2020·Granted Jul 1, 2025·0 cites·10 claims
- 3545US9564337B2Polishing liquid and method for polishing substrate using the polishing liquidOOTA MUNEHIRO·Filed 2011·Granted Feb 7, 2017·0 cites·7 claims
- 3644US11649377B2Polishing liquid, polishing liquid set and polishing methodHITACHI CHEMICAL CO LTD·Filed 2017·Granted May 16, 2023·0 cites·20 claims
- 3743US2024327280A1Manufacturing method for glass substrate and disc-shaped glass substrateHOYA CORP·Filed 2022·Application pending·0 cites
- 3837US6087345AMaterial inhibiting lipid peroxide-increaseMEIJI SEIKA KAISHA·Filed 1999·Granted Jul 11, 2000·5 cites·6 claims
- 3937US2003077982A1Method of producing a glass substrate for a magnetic recording medium and method of producing a magnetic recording mediumHOYA CORP·Filed 2002·Application pending·0 cites
- 4025US4990451AProcess for the preparation of inulaseMEIJI SEIKA KAISHA·Filed 1990·Granted Feb 5, 1991·2 cites·4 claims
Join the waitlist — get patent alerts
Get an alert when Toshio Takizawa files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →