Searching Patents for

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Searching Patents for Chemical Processes
Ron Hambric Patent Trademark Research
Center Evans Library 1st Floor, Room 105 Hours
M-F 8-10am and 1-3pm
Phone [phone]
Email rhambric_at_tamu.edu
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The Worlds Patenting Offices Depositary of the
largest databases of technical knowledge
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What types of patent documents are there?
For the United States Patent Office over
7.4 million patents have issued since July 31,
1790
Patent types Utility, design and plant
2004 Total patents issues 181,322
As of Tuesday morning - 6,993,790 files Aug.
30, 2001
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How is this useful to me as a chemist?
A process for preparing a compound or
A composition containing a compound or
An article made from the compound or
An article made containing the compound or
A method of using the compound for a
specific purpose
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Where you could encounter patents -
As citations in chemical literature
When preparing a patent application
When involved in the negotiations for
licensing a patent
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Type patent in this Field and click on Submit
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Then click on the title with your left
mouse button
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Scroll to bottom of window and select Tools
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Beginning the Search Step 1 in the Seven Step
Strategy Use U.S. Patent Classification Index
NOT
Select USPC Index button
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Looking for Hydrogen Peroxide Select the Letter
H for Hydrogen
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Use browser Find function to search page for
the word Hydrogen
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Hydrofluosilic Acid ........................  423 
/ 341 Hydrofoils ................................
.  114 / 274 Hydrogen ...........................
........  423 / 648.1     Alloys for storage
.....................  420 / 900
    Carbureting ............................  48 
/ 199 R         Apparatus .......................
...  48 / 116     Compositions containing
................  252 / 372     Electrolytic
synthesis .................  205 / 637
    Exchange disproportionation  
        Hydrogenation by ...................  585
 / 257         Olefin synthesis by
................  585 / 656     Generative
composition .................  252 / 188.1
    Ion           Electrolytic analysis or
testing ...  205 / 787.5         For ph
.............................  205 / 787.5
        Testing electrolytic apparatus
.....  204 / 433         Testing systems
....................  324 / 438     Peroxide
...............................  423 / 584
        Electrolytic synthesis
.............  205 / 465         Electrostatic
field or .............  204 / 175
        Electrical discharge synthesis
.....  204 / 175         Treatment
..........................  430 / 943
    Sulphide           Synthetic resin or
natural .........  525 / 343         Rubber
vulcanization with ..........  525 / 343
Located the subject Hydrogen then
Peroxide Class / subclass is 423 /
584 Hyperlinks to Manual of
Classification
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Step 2 Class 423, Chemistry of Inorganic
Compounds
Class 423 hyperlink to definition of class
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Note the Manuals Hierarchical Setup
Scanning down the schedule we find the
appropriate peroxide by following the schedule
hierarchy from least specific to most specific
Subclass 584 looks good Check its definition
using the hyperlink
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Step 3 Finding the Definition for 423/584
Use the red Phyperlink See all patents for
a Particular class/subclass
Note that See references can provide
suggestions for further searching
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Step 4 Reviewing the Results Found
Using the Refine Search We could narrow our
search. If necessary, by adding keywords
Clicking on the links will take you to the full
text of the patent
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Full-Text and Image Only Patents
Example of a classification having patents
granted before 1976
A patent displaying a T icon has the full text
available for viewing. A patent displaying the
picture icon, only has the patent
image available for viewing.
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Step 5 Find out it you are on the Right
Path Looking at patents 1790 - present
Scrolling down and reviewing titles, it looks
like number 5,961,948 might be worth reviewing
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Step 6 Reading the Information from a Patent
Patent Number and date issued
Abstract of patent
Title of the Invention
Inventors names
Assignee Information
Classification information
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Valuable information can be found from the listed
References Patents which are cited by the
inventor References which cited this patent Other
references journal articles, patent
applications, etc
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The description gives a brief summary of the
invention, a description of the any drawings,
useful background information of the invention
and a detailed description of the invention
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Examples listed in a patent shows how the
invention works
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Claims identify the features of the invention
that make it patentable Classes / Subclasses
supports the claims
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Retrieved Image for US patent 5,961,948
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WWW.USPTO.GOV Select the Search button under
Patents
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Retrieving a patent when we have the patent
number Select the Patent Number Search
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Retrieve patent number 3,492,131 Input patent
number as a seven digit number Select the
Search button
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Full Text is not available View the patent image
by selecting the Image button
Note Current U.S. Class is displayed
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Viewing an earlier patent document style
Use the tool bar in the document window to
print, save, enlarge document view, etc.
Use these buttons to select pages of patent
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Note U.S. CL. 99 141 Is an old
Classification Current Classification
426/548 was shown on search result page
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Looking at the Patent Image
To view digital images of your Patent click on
Images. If you computer does not an Image
viewer, click on Help
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A Word About the Images
This link will take you to the viewers for the
patent images Installation instructions will be
found on that page
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Searching the Published Applications
Select - Quick Search button
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Searching Published Applications
Fill boxes with search terms
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Searching 432/584 (class/subclass) for Hydrogen
Peroxide
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Results of Search for 423/584 (class/subclass)
Note format of Pub. App. Num. Select the first
application
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In the format of a patent Line (10)
Pub. No. US 2006/0002847
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Could not find Aspartame in USPC Index Used
the Merck Index to locate addition
information Found US Patent 3492131 Found
class/sub/class as 426/548
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Cant find a starting Class/subclass
The Merck Index Encyclopedia of Chemical
Trademarks and Synonyms Ullmanns
Encyclopedia of Industrial Chemistry Scifinder
Scholar Chemical Abstracts Search patent by
keyword or synonym
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Advantages of using the Patent
Trademark Research Center
PubWEST Web-based Examiners Search
Tool Searches can be saved U.S. patents Full
Text back to 1971 U.S. Pre-Grand Publication
Full-Text U.S. OCR Full-Text 1920 to
1970 Foreign Patent Images
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Chempat Website follow links Lib. Home page,
Collections. General Collections, Patents,
Select Teaching Guides for Chemistry