Learn more

LIU CHANGWEN

Overview
  • Total Patents
    33
  • GoodIP Patent Rank
    73,619
  • Filing trend
    ⇩ 100.0%
About

LIU CHANGWEN has a total of 33 patent applications. It decreased the IP activity by 100.0%. Its first patent ever was published in 1990. It filed its patents most often in China and United States. Its main competitors in its focus markets digital networks, pharmaceuticals and telecommunications are CHEN MINGHUA, WANG YANLIN and LI ZHENHAI.

Patent filings in countries

World map showing LIU CHANGWENs patent filings in countries
# Country Total Patents
#1 China 24
#2 United States 9

Patent filings per year

Chart showing LIU CHANGWENs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Liu Changwen 33
#2 Lee Ronald 2
#3 Stephens Adrian P 2
#4 Lee Ronald B 2
#5 Delucio Glenn 1
#6 Iyer Prakash N 1
#7 Iyer Prakash 1
#8 Xiaodi Pan 1
#9 Andrews Michael B 1
#10 Feng Sen 1

Latest patents

Publication Filing date Title
CN107667992A A kind of method for promoting silkworm while cocooing
CN107750815A A kind of implantation methods of generation material black fungus
CN107653138A A kind of rice wine brewing technology
CN107637369A A kind of planting technology of persimmon
CN107646498A A kind of method for transplanting of rare tree
CN107837319A A kind of Chinese medicine composition for alleviating apoplexy sequelae
CN109770267A A kind of production method in fish face
CN109770244A A kind of preparation method of bacon
CN109769747A A kind of peach garden ecologic breeding kind duck mode
CN107753868A A kind of medicament for treating the proliferation of mammary gland
CN107639310A A kind of twin shaft automates tapping machine
CN107637370A A kind of implantation methods of yellow pears
CN107691085A A kind of breeding method of no seed sweet tea persimmon
CN107648503A One kind is used for urinary infection concurrently prostatitic medicament
CN107625850A A kind of Chinese medicinal granule for treating children's dyspneic cough
CN107661405A A kind of Chinese medicine composition for traumatic injury convalescence
CN109771357A A kind of washing cream and preparation method thereof for treating the heterochromatic disease of face
CN107714878A A kind of Chinese medicine composition for treating amenorrhoea
CN107912228A A kind of termite-proof technology of rhizoma Gastrodiae biology
CN107794162A A kind of preparation method of Chinese chestnut wine