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Inventor

Akihiro Sakamoto

Inventor
Tokyo, JP

Overview

24→
Patents
1997–2020
Patent span
Chemistry
Primary field (CPC C)

Patents· 24 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

C21Dprimary
C21DModifying the physical structure of ferrous metals10%
C22CAlloys7%
Y10TTechnical subjects covered by former us classification5%
A23LFoods, foodstuffs or non-alcoholic beverages, not otherwise provided for3%
B08BCleaning in general3%
B21DWorking or processing of sheet metal or metal tubes, rods or profiles without essentially removing material3%
B24DTools for grinding, buffing or sharpening3%
C08JWorking-up3%
G01PMeasuring linear or angular speed, acceleration, deceleration, or shock3%
G01RMeasuring electric variables3%
PatentTitleYear
10,861,675Plasma processing apparatus and plasma processing method202010,625,321Cooling apparatus and cooling method for steel material202010,626,475Heat treatment apparatus, heat treatment method for steel workpiece, and hot bending method for steel workpiece202010,407,758Steel for oil country tubular goods and method of producing the same201910,204,763Plasma processing apparatus and plasma processing method20199,909,198'Method for producing a low alloy steel for oil country tubular goods having excellent sulfide stress cracking resistance'20189,546,408'Quenching method for steel pipe'20179,181,610'Air cooling equipment for heat treatment process for martensitic stainless steel pipe or tube'20158,428,907'Jitter calculating device, jitter calculating method and jitter calculating program'20138,225,546'Plant cultivation structure, root-preventing structure and root-preventing sheet used in them'20128,049,990'Cleaning tape and method of producing same'20118,016,642'Blasting device for steel pipe inner surface, blasting method for steel pipe inner surface, and method for producing steel pipe with excellent inner surface texture'20117,954,887'Rear structure of vehicle'20117,838,666'Water-dispersible cellulose and process for producing the same'20107,614,183'Complex system of vegetation and solar cell'20097,544,379'Composite containing fine cellulose'20097,243,546'Acceleration sensor chip'20077,237,316'Method for fabricating a three-dimensional acceleration sensor'20076,884,300'Method of cleaning a probe'20056,686,041'Coloring master pellet for optical molded article and colored optical disk substrate'20046,111,035'Polymerization process using separated flow'20006,063,130'Circuit simulation method'20005,717,848'Method and apparatus for generating object motion path, method of setting object display attribute, and computer graphics system'19985,680,525'Three-dimensional graphic system with an editor for generating a textrue mapping image'1997

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1997–1998Patents assigned to HITACHI LTD (2)· patent assignee history
2000–2020Based in Tokyo, JP· patent location history
2007Based in Miyazaki, JP· patent location history
2009–2010Patents assigned to ASAHI CHEMICAL IND (2)· patent assignee history
2009–2010Based in Nobeoka, JP· patent location history
2012–2017Patents assigned to SAKAMOTO AKIHIRO (4)· patent assignee history
2015–2020Patents assigned to NIPPON STEEL & SUMITOMO METAL CORP (6)· patent assignee history
2018–2020Based in Kisarazu, JP· patent location history
2019–2020Patents assigned to NIPPON STEEL CORP (3)· patent assignee history
2019–2020Based in Miyagi, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
NIPPON STEEL & SUMITOMO METAL CORP62015–2020
SAKAMOTO AKIHIROself42012–2017
NIPPON STEEL CORP32019–2020
ASAHI CHEMICAL IND22009–2010
HITACHI LTD21997–1998
Locations
LocationPatentsSpan
Tokyo, JP82000–2020
Miyagi, JP22019–2020
Kisarazu, JP22018–2020
Nobeoka, JP22009–2010
Miyazaki, JP22007