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Inventor

Nagahisa Matsudaira

Inventor
Kasukabe, JP

Overview

5→
Patents
1984–2003
Patent span
Physics
Primary field (CPC G)

Patents· 5 as inventor

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

G06Kprimary
G06KGraphical data reading24%
G03HHolographic processes or apparatus18%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests18%
Y10TTechnical subjects covered by former us classification18%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form12%
C08LCompositions of macromolecular compounds6%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein6%
PatentTitleYear
RE038321'Transparent hologram seal'20036,096,431'Biodegradable cards'20005,700,550'Transparent hologram seal'19975,486,933'Monochromatic-light reproduction type hologram, and method and apparatus for its image reproduction'19964,448,493'Electrochromic display device'1984

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1984–2003Patents assigned to TOPPAN PRINTING CO LTD (5)· patent assignee history
1984–1996Based in Tokyo, JP· patent location history
1997–2003Based in Kasukabe, JP· patent location history
2000Based in Saitama, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
TOPPAN PRINTING CO LTD51984–2003
Locations
LocationPatentsSpan
Kasukabe, JP21997–2003
Tokyo, JP21984–1996
Saitama, JP12000