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English: Bar chart showing number of United States utility patents issued by year, from 1976, with indicators of issue dates of Patent Nos. 5,000,000, 6,000,000 ... 11,000,000 Data source for Version 4 is USPTO (calendar years): Data source through 2020: U.S. Patent Activity / Calendar Years 1790 to the Present. U.S. Patent and Trademark Office ...
1547–1582. The rolls for the years 1547–1582 were published in calendar form in 19 volumes, under the title Calendar of the Patent Rolls, between 1924 and 1986. 1582–1603. In the late 1980s, the Public Record Office suspended its programme of scholarly publication, and the initiative passed to the List and Index Society. Between 1990 and ...
Current events; Random article; ... Download as PDF; Printable version; ... List of steam technology patents. This is a list of patents [1] relating to steam ...
Wikipedia entry for Google Patents.Google Patents is a search engine from Google that indexes patents and patent applications from the United States Patent and Trademark Office.
Download as PDF; Printable version; ... Appearance. move to sidebar hide. Help. Pages in category "Lists of patents" The following 6 pages are in this category, out ...
This is a list of software patents, which contains notable patents and patent applications involving computer programs (also known as a software patent). Software patents cover a wide range of topics and there is therefore important debate about whether such subject-matter should be excluded from patent protection. [ 1 ]
[5] The Patent Act of 1836 (Ch. 357, 5 Stat. 117) further clarified United States patent law to the extent of establishing a patent office where patent applications are filed, processed, and granted, contingent upon the language and scope of the claimant's invention, for a patent term of 14 years with an extension of up to an additional 7 years ...
The Derwent World Patents Index (DWPI) is a database containing patent applications and grants from 44 of the world's patent issuing authorities. [1] [2]Compiled in English by editorial staff, the database provides a short abstract detailing the nature and use of the invention described in a patent and is indexed into alphanumeric technology categories to allow retrieval of relevant patent ...