Patents
US patents through Dec 31, 2025 · PatentsView, from the USPTO’s Open Data Portal · read Oct 27, 2026
320 patents granted to the name 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 NLI Holdings, Inc.’s names, not what it holds today.
Patents granted
320
315 utility, 4 design, 1 reissue, 1976 to Dec 31, 2025
Granted in 2025
none
in the last year the record reads
Applications published
0
since 2001, to Dec 31, 2025
Names they are printed under
1
a former name
By yearGrantedApplications published
'78'79'80'81'82'83'84'85'86'87'88'89'90'92'93
Each pair is one calendar year. Applications are published about eighteen months after filing, so the newest years read low.
Under which name1 counted
NL Industries, Inc. a former name
US, as the owner printed on each patent
0 published
Newest grantseach row opens the USPTO’s own copy
| Granted | Patent | Title | Field | Owner as printed |
|---|
| Sep 28, 1993 | 5,248,342 | Methods for processing battery waste and other lead-contaminated materials | Electrical machinery, apparatus, energy | NL Industries, Inc. |
| Apr 27, 1993 | 5,205,952 | Methods for controlling airborne dissemination of lead and lead-contaminated fines during the storage and processing of lead-contaminated materials | Electrical machinery, apparatus, energy | NL Industries, Inc. |
| Dec 22, 1992 | 5,173,277 | Methods for processing battery waste and other lead-contaminated materials | Electrical machinery, apparatus, energy | NL Industries, Inc. |
| Feb 13, 1990 | 4,900,159 | High shear mixing apparatus | Chemical engineering | NL Industries, Inc. |
| Sep 19, 1989 | 4,867,418 | Apparatus for increasing the load handling capability of support and manipulating equipment | Handling | NL Industries, Inc. |
| Aug 8, 1989 | 4,855,870 | Assemblies for supporting electrical circuit boards within tubes | Audio-visual technology | NL Industries, Inc. |
| May 9, 1989 | 4,829,176 | Logging apparatus and method | Measurement | NL Industries, Inc. |
| Mar 7, 1989 | 4,810,459 | Method and apparatus for determining true formation porosity from measurement-while-drilling neutron porosity measurement devices | Measurement | NL Industries, Inc. |
| Feb 14, 1989 | 4,804,051 | Method of predicting and controlling the drilling trajectory in directional wells | Civil engineering | NL Industries, Inc. |
| Dec 20, 1988 | 4,791,797 | Density neutron self-consistent caliper | Civil engineering | NL Industries, Inc. |
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.