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Inventor

Hefeng Wang

Inventor
Tokyo, JP

Overview

4→
Patents
1992–2021
Patent span
Electricity
Primary field (CPC H)

Patents· 4 as inventor

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

H04Bprimary
H04BTransmission22%
A61LMethods or apparatus for sterilising materials or objects in general11%
C08JWorking-up11%
C08LCompositions of macromolecular compounds11%
G01SRadio direction-finding11%
H03DDemodulation or transference of modulation from one carrier to another11%
H03GControl of amplification11%
H04LTransmission of digital information, e.g. telegraphic communication11%
PatentTitleYear
10,934,408Surface modification method for polyether-ether-ketone material20215,771,442'Dual mode transmitter'19985,606,285'Power control circuit for use with transmitter'19975,093,839'Frequency diversity receiving system based on cancellation of C/A code in GPS'1992

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1992Patents assigned to SOKKISHA (1)· patent assignee history
1992Based in Yokohama, JP· patent location history
1997–1998Patents assigned to OKI ELECTRIC IND CO LTD (2)· patent assignee history
1997–1998Based in Tokyo, JP· patent location history
2021Patents assigned to SHANGHAI INST CERAMICS CAS (1)· patent assignee history
2021Based in Shanghai, CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
OKI ELECTRIC IND CO LTD21997–1998
SHANGHAI INST CERAMICS CAS12021
SOKKISHA11992
Locations
LocationPatentsSpan
Tokyo, JP21997–1998
Shanghai, CN12021
Yokohama, JP11992