Patents: The Three P’s

Patents are a rich source of technological information. Mining the patent database effectively requires the three P’s … Practice, Persistence and Patience. If you have the time and the interest to see who is doing what in your field, get started by following the example below.

I went to the U.S. Patent & Trademark Office (USPTO) Web site (http://patft.uspto.gov/) and performed an advanced searchin the APPLICATIONS section of the database using this search strategy:

SPEC/dibenzothiophene AND SPEC/diesel

Of the 186 hits resulting from the search, the first 10 are listed below.

1 20090139898 Hydrogenation catalyst and use thereof
2 20090134067 SYSTEMS AND METHODS OF PRODUCING A CRUDE PRODUCT
3 20090134060 SYSTEMS AND METHODS OF PRODUCING A CRUDE PRODUCT
4 20090120842 Process for upgrading whole crude oil to remove nitrogen and sulfur compounds
5 20090120841 Methods of denitrogenating diesel fuel
6 20090107890 Desulfurization of whole crude oil by solvent extraction and hydrotreating
7 20090105966 Estimating detailed compositional information from limited analytical data
8 20090095683 PORTABLE FUEL DESULTURIZATION UNIT
9 20090084709 Method of producing low sulfur, high octane gasoline
10 20090076221 REMOVAL OF BRANCHED DIBENZOTHIOPHENES FROM HYDROCARBON MIXTURES VIA CHARGE TRANSFER COMPLEXES WITH A TAPA-FUNCTIONALIZED ADSORBENT

Opening each patent application in turn, I found the names of the organizations associated with each, as well as the primary patent classification code assigned to each, to wit …

20090139898 Hydrogenation catalyst and use thereof
Correspondence Name: KENYON & KENYON LLP
208/46

20090134067 SYSTEMS AND METHODS OF PRODUCING A CRUDE PRODUCT
Correspondence Name: SHELL OIL COMPANY
208/145

20090134060 SYSTEMS AND METHODS OF PRODUCING A CRUDE PRODUCT
Correspondence Name: SHELL OIL COMPANY
208/15

20090120842 Process for upgrading whole crude oil to remove nitrogen and sulfur compounds
Assignee Name: Saudi Arabian Oil Company
208/250

20090120841 Methods of denitrogenating diesel fuel
Assignee Name: UOP LLC
208/209

20090107890 Desulfurization of whole crude oil by solvent extraction and hydrotreating
Correspondence Name: ABELMAN, FRAYNE & SCHWAB
208/208R

20090105966 Estimating detailed compositional information from limited analytical data
Correspondence Name: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
702/30

20090095683 PORTABLE FUEL DESULTURIZATION UNIT
Correspondence Name: HONEYWELL INTERNATIONAL INC.
210/660

20090084709 Method of producing low sulfur, high octane gasoline
Assignee Name: Saudi Arabian Oil Company
208/250

20090076221 REMOVAL OF BRANCHED DIBENZOTHIOPHENES FROM HYDROCARBON MIXTURES VIA CHARGE TRANSFER COMPLEXES WITH A TAPA-FUNCTIONALIZED ADSORBENT
Correspondence Name: CHEVRON CORPORATION
525/102

When you do your search and identify a patent or patent application of interest, make a note of the patent classification code. Then repeat your search using the same code to see patents or patent applications that have been assigned the same code.

I will have more search tips in future posts to this blog.