使用Google专利api

Question

我只是想使用 Python 和 Google 专利搜索 API 找出专利的所有者。

import urllib2
import json

url = ('https://ajax.googleapis.com/ajax/services/search/patent?' +
       'v=1.0&q=barack%20obama')

request = urllib2.Request(url, None, {})
response = urllib2.urlopen(request)

# Process the JSON string.
print json.load(response)
# now have some fun with the results...

这个结果并没有告诉受让人。我怎么才能得到它？

Answer 1

Google 专利 API 已弃用（“ Google Patent Search API 已于 2011 年 5 月 26 日正式弃用。 ”）。我认为你得到的数据并不可靠。

我不确定 Google 服务条款是否允许针对各个 Google 专利页面，但一种策略可能是使用搜索来获取结果列表，然后使用Beautiful Soup之类的东西来解析每个结果。

例子：

import urllib2
import json
from bs4 import BeautifulSoup

url = ('https://ajax.googleapis.com/ajax/services/search/patent?' +
       'v=1.0&q=barack%20obama')
request = urllib2.Request(url, None, {})
response = urllib2.urlopen(request)
jsonResponse = json.load(response)
responseData=jsonResponse['responseData']
results = responseData["results"]

print "This doesn't work, no assignee data..."
for result in results:
    print "patent no.: ", result["patentNumber"]
    print "assignee: ", result["assignee"]
    print " "

print "...but this seems to."
for result in results:
    URL = "https://www.google.com/patents/"+result["patentNumber"]
    req = urllib2.Request(URL, headers={'User-Agent' : "python"})
    _file = urllib2.urlopen(req)
    patent_html = _file.read()
    soup = BeautifulSoup(patent_html, 'html.parser')
    patentNumber = soup.find("span", { "class" : "patent-number" }).text
    assigneeMetaTag = soup.find("meta", { "scheme" : "assignee"})
    patentAssignee = assigneeMetaTag.attrs["content"]
    print "patent no.: ", patentNumber
    print "assignee: ", patentAssignee
    print " "

对我来说这打印出来：

This doesn't work, no assignee data...
patent no.:  US20110022394
assignee:

patent no.:  US20140089323
assignee:

patent no.:  US8117227
assignee:

patent no.:  CA2702937C
assignee:

...but this seems to.
patent no.:  US 20110022394 A1
assignee:  Thomas Wide

patent no.:  US 20140089323 A1
assignee:  Appinions Inc.

patent no.:  US 8117227 B2
assignee:  Scuola Normale Superiore Di Pisa

patent no.:  CA 2702937 C
assignee:  Neil S. Roseman

需要注意的是，我相信您只会在专利颁发之日起获得受让人；如果已转让，则不是当前受让人。