Inventor

Seiji Sakamoto

Inventor

Machida, JP

Overview

27→

Patents

1978–2018

Patent span

Chemistry

Primary field (CPC C)

Patents· 27 as inventor

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

Y10Tprimary

Y10TTechnical subjects covered by former us classification18%

C08JWorking-up14%

G11BInformation storage based on relative movement between record carrier and transducer14%

C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients11%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests11%

LOC268%

C08LCompositions of macromolecular compounds7%

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds3%

C10BDestructive distillation of carbonaceous materials for production of gas, coke, tar, or similar materials3%

A61KPreparations for medical, dental or toiletry purposes1%

PatentTitleYear

10,080,713Surface-treated spherical calcium carbonate particles for cosmetics and method for producing same2018 D0598158'Tubular lamp'2009 D0586939'Tubular lamp'2009 D0586940'Tubular lamp'2009 D0586941'Tubular lamp'2009 D0586494'Tubular lamp'2009 D0586495'Tubular lamp'2009 6,875,316'High reactivity and high strength coke for blast furnace and method for producing the same'2005 6,830,660'Method for producing metallurgical coke'2004 5,863,641'Polyester film for sublimation type thermal transfer printing'1999 5,670,236'Biaxially oriented polyester film for magnetic recording medium'1997 5,401,558'Biaxially oriented polyester film for capacitor dielectric'1995 5,364,684'Magnetic recording medium comprising a polyethylene-2,6-naphthalate multilayered film coated on both sides by a coating layer'1994 5,324,574'Biaxially stretched polyester film'1994 5,164,439'Polyester film for magnetic recording media'1992 5,096,773'Biaxially oriented polyester film'1992 5,061,571'Biaxially oriented polyester film'1991 5,023,291'Polyester composition'1991 5,006,589'Polyester film for magnetic recording media'1991 4,886,705'Polyphenylene sulfide film'1989 4,840,830'Polyester film for magnetic recording tape'1989 4,767,657'Polyester films suitable for use in magnetic tapes'1988 4,732,799'Polyethylene naphthalate film'1988 4,729,915'Electrical insulating material'1988 4,320,207'Polyester film containing fine powder of crosslinked polymer'1982 4,101,523'Polyester films'1978 4,096,109'Polyester films useful as magnetic tapes'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978Patents assigned to MITSUBISHI CHEM IND (2)· patent assignee history

1978–1997Based in Machida, JP· patent location history

1982–1992Patents assigned to DIAFOIL CO LTD (11)· patent assignee history

1982–1994Based in Yokohama, JP· patent location history

1994–1999Patents assigned to DIAFOIL HOECHST CO LTD (5)· patent assignee history

2004–2005Patents assigned to JFE STEEL CORP (2)· patent assignee history

2004–2005Based in Okayama, JP· patent location history

2009Patents assigned to HARISON TOSHIBA LIGHTING CORP (6)· patent assignee history

2009Based in Imabari, JP· patent location history

2018Based in Iwaki, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
DIAFOIL CO LTD	11	1982–1992
HARISON TOSHIBA LIGHTING CORP	6	2009
DIAFOIL HOECHST CO LTD	5	1994–1999
JFE STEEL CORP	2	2004–2005
MITSUBISHI CHEM IND	2	1978

Locations

Location	Patents	Span
Machida, JP	13	1978–1997
Imabari, JP	6	2009
Yokohama, JP	3	1982–1994
Okayama, JP	2	2004–2005
Iwaki, JP	1	2018