Inventor

KOJI KAWAI

Inventor
JP

Overview

15→
Patents
2021–2025
Patent span
Chemistry
Primary field (CPC C)

Patents· 15 as inventor

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

C08Kprimary
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients15%
C07DHeterocyclic compounds13%
C09KMaterials for miscellaneous applications, not provided for elsewhere11%
C08JWorking-up10%
C08LCompositions of macromolecular compounds10%
G02BOptical elements, systems or apparatus10%
C07CAcyclic or carbocyclic compounds8%
LOC147%
A61KPreparations for medical, dental or toiletry purposes2%
A61QSpecific use of cosmetics or similar toiletry preparations2%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2021–2025Patents assigned to MIYOSHI YUSHI KK (11)· patent assignee history
2021–2024Patents assigned to TOKAI OPTICAL CO LTD (5)· patent assignee history
2021–2025Based in JP· patent location history
2024–2025Patents assigned to LENOVO SINGAPORE PTE LTD (4)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MIYOSHI YUSHI KK112021–2025
TOKAI OPTICAL CO LTD52021–2024
LENOVO SINGAPORE PTE LTD42024–2025
Locations
LocationPatentsSpan
JP152021–2025