Patents
US patents through Dec 31, 2025 · PatentsView, from the USPTO’s Open Data Portal · read Oct 27, 2026
34 patents granted to the 3 names below, as the owner printed on each patent when it was granted. A later sale, a lapse or an expiry is not read, so this is what was granted to Kronos Worldwide, Inc.’s names, not what it holds today.
Patents granted
34
34 utility, 1976 to Dec 31, 2025
Granted in 2025
none
in the last year the record reads
Applications published
1
since 2001, to Dec 31, 2025
Names they are printed under
3
a former name, a subsidiary, its own name
By yearGrantedApplications published
'85'86'87'88'89'90'93'94'95'96'97'99'02'05'21
Each pair is one calendar year. Applications are published about eighteen months after filing, so the newest years read low.
Under which name3 counted
Kronos, Inc. a former name
US, as the owner printed on each patent
0 publishedKronos Titan GmbH a subsidiary
DE, as the owner printed on each patent
0 publishedKRONOS WORLDWIDE, INC. its own name
named as the applicant on its applications, in US
1 publishedNames not counted (3)
Kronos International, Inc.
Most of its patents print DE; this name counts in US. 40 granted and 30 published under it are not counted.
Kronos International, Inc.
Most of its patents print DE; this name counts in US. 0 granted and 30 published under it are not counted.
KRONOS INC
Most of its patents print IT; this name counts in US. 0 granted and 1 published under it are not counted.
Newest grantseach row opens the USPTO’s own copy
| Granted | Patent | Title | Field | Owner as printed |
|---|
| Nov 8, 2005 | 6,962,622 | Titanium dioxide pigment composition | Basic materials chemistry | Kronos Titan GmbH |
| Jun 4, 2002 | 6,399,033 | Process for increasing the yield in the manufacture of titanium dioxide by the chloride process | Materials, metallurgy | Kronos, Inc. |
| Aug 24, 1999 | 5,942,201 | Process utilizing titanium dioxide as a catalyst for the hydrolysis of carbonyl sulfide | Chemical engineering | Kronos, Inc. |
| Nov 4, 1997 | 5,683,669 | Metal chloride generator and improved process for the production of metal chlorides used in the manufacture of titanium dioxide by the chloride process | Materials, metallurgy | Kronos, Inc. |
| Jul 30, 1996 | 5,540,907 | Process for preparing high solids content titanium dioxide suspension with a dechlorinating agent | Basic materials chemistry | Kronos, Inc. |
| Jul 16, 1996 | 5,536,487 | Process for the use of rutile promoter and control additives in the manufacture of titanium dioxide by the chloride process | Materials, metallurgy | Kronos, Inc. |
| Nov 28, 1995 | 5,471,043 | Electro-optic barcode reader | Computer technology | Kronos, Inc. |
| Sep 19, 1995 | 5,451,252 | Subpigmentary titanium dioxide with improved photostability | Basic materials chemistry | Kronos, Inc. |
| Apr 25, 1995 | 5,409,679 | Process for the production of titanium dioxide | Materials, metallurgy | Kronos, Inc. |
| Apr 18, 1995 | 5,408,173 | Manual-adjustment-free controlled-voltage and current-limited D.C. voltage supply | Control | Kronos, Inc. |
Newest applications publishedan application is a clue, never a plan
A patent is counted where the owner printed on it when it was granted carries the company’s own name, a former name, the name of a subsidiary its annual report lists, or its own name with a patent-holding phrase (Technology Licensing, Intellectual Property and the like), once the legal form, case and punctuation are set aside, and prints a country that name counts in. PatentsView’s data are published under the Creative Commons Attribution 4.0 licence. Source: PatentsView's granted patents and pre-grant publications, disambiguated, from the USPTO's Open Data Portal, through Dec 31, 2025, read Oct 27, 2026.