Protections are granted to inventors under Article I, Section 8 of the U.S. Constitution that permit the inventor to exclude others from making, using or selling the invention for a restricted period of time. These protections are called patents. Patent records give a picture of the concerns and economic operations at a particular place and at a particular point in time.

The earliest patents granted to persons living in Louisiana were awarded in 1810, although the U.S. awarded the first patent in 1790. This index covers the years 1810-1890.

Information came from the U.S. Patent Office Annual Reports. If you would like to see full text of these patents, search by the Patent Number at The U.S. Patent and Trademark Office web page. Items beginning with Unmb are part of the unnumbered patents series before 1837. Some are available on microfilm from any Patent Depository Library.

The data on this page is arranged by Inventor(s), by person or company to whom the patent was assigned, by subject category and by parish. Each patent has a representative drawing attached, if available. Searching is also available by Inventor's Last Name, Keyword in title and Place. If there is no information an empty set screen will appear.

The column to the left shows some analysis of the data in these files.

Not all current parishes are represented. Some parishes were formed after 1890. Click on Original Parishes to the left to see a map of the first parishes formed in Louisiana.

Click on the categories below to begin your search. Click on the patent number to see the full patent information.

BROWSE INDEX BY ASSIGNEE
BROWSE INDEX BY INVENTOR NAME
BROWSE INDEX BY PARISH
BROWSE INDEX BY SUBJECT
KEYWORD SEARCH BY INVENTOR NAME
KEYWORD SEARCH BY TITLE WORD
SEARCH BY PLACE
SEARCH BY YEAR



If you would like to examine early patents from other locations try these links:

African-American Inventors Database

Victorian Patents and Patentees Australian Patents.

Women Inventors Index

Wyoming Inventors Database


Susan E. Hocker, Miami University Libraries. 03/13/02
Database is no longer maintained. Made available for use as is.