W.R. Berkley Corporation (WRB)
NYSE: WRB · Fire, Marine & Casualty Insurance · Greenwich, CT · filing with the SEC since 1994
Grade6.5
◀ Past 7.3● Present 6.3▶ Future 5.5
Patents
US patents through Dec 31, 2025 · PatentsView, from the USPTO’s Open Data Portal · read Oct 27, 202633 patents granted to the 10 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 W.R. Berkley Corporation’s names, not what it holds today.
Patents granted
33
29 utility, 4 design, 1976 to Dec 31, 2025
Granted in 2025
none
Against none in 2024 and 2 in 2023
Applications published
37
1 of them in 2025
Names they are printed under
10
a subsidiary
By yearGrantedApplications published
Each pair is one calendar year. Applications are published about eighteen months after filing, so the newest years read low.
What they are aboutgrants since 2021
Surface technology, coating2
The main technology area of each patent, in the World Intellectual Property Organization’s 35 fields.
Under which name10 counted
Nanotex LLC a subsidiary
US, as the owner printed on each patent
24 published
Chilewich Sultan LLC a subsidiary
US, as the owner printed on each patent
0 published
Crypton, Inc. a subsidiary
named as the applicant on its applications, in US
4 published
Midwest Employers Casualty Company a subsidiary
US, as the owner printed on each patent
3 published
BERKLEY INTERNATIONAL, LLC a subsidiary
named as the applicant on its applications, in US
3 published
Crypton, Inc. a subsidiary
US, as the owner printed on each patent
0 published
Berkley Insurance Company a subsidiary
US, as the owner printed on each patent. 1 more under the same name are not counted (printed in GB)
1 published
Berkley Insurance Company a subsidiary
named as the applicant on its applications, in US
1 published
Berkley International, LLC a subsidiary
US, as the owner printed on each patent
0 published
CHILEWICH SULTAN, LLC a subsidiary
named as the applicant on its applications, in US
1 published
Newest grantseach row opens the USPTO’s own copy
| Granted | Patent | Title | Field | Owner as printed |
|---|---|---|---|---|
| Mar 28, 2023 | 11,613,109 | Multilayer substrate materials for application to textile fabrics | Surface technology, coating | Crypton, Inc. |
| Jan 31, 2023 | D976,593 | Textile material with supporting rods | Chilewich Sultan LLC | |
| Feb 1, 2022 | 11,235,556 | Finished composite textile material | Surface technology, coating | Crypton, Inc. |
| Jun 9, 2020 | 10,679,299 | Machine learning risk factor identification and mitigation system | IT methods for management | Midwest Employers Casualty Company |
| Dec 17, 2019 | 10,507,950 | Shipping insert | Handling | Berkley International, LLC |
| Jul 15, 2014 | 8,778,321 | Modification of cellulosic substrates to control body odor | Textile and paper machines | Nanotex LLC |
| Jan 17, 2012 | D652,238 | Fish mat | Chilewich Sultan LLC | |
| Jun 14, 2011 | D639,563 | Tray system | Chilewich Sultan LLC | |
| Nov 30, 2010 | 7,842,625 | Methods for treating fabric to facilitate moisture transfer from one side to the other | Textile and paper machines | Nanotex LLC |
| May 11, 2010 | D615,337 | Dog mat | Chilewich Sultan LLC |
Newest applications publishedan application is a clue, never a plan
| Published | Application | Title | Field | Owner as printed |
|---|---|---|---|---|
| Jan 23, 2025 | 2025/0029186 | DYNAMIC ELECTRONIC INSURANCE APPLICATION WORKFLOW SYSTEM | IT methods for management | Berkley Insurance Company |
| Jan 27, 2022 | 2022/0027380 | DATA MANAGEMENT SYSTEM AND METHOD FOR GENERAL LEDGER | Computer technology | Berkley Insurance Company |
| Oct 14, 2021 | 2021/0316923 | Retail Card Package | Handling | BERKLEY INTERNATIONAL, LLC |
| Jun 10, 2021 | 2021/0171262 | Mail Assembly for Flats Transportation | Handling | BERKLEY INTERNATIONAL, LLC |
| Nov 5, 2020 | 2020/0346442 | MULTILAYER SUBSTRATE MATERIALS FOR APPLICATION TO TEXTILE FABRICS | Surface technology, coating | Crypton, Inc. · patent 11,613,109 granted from it |
| Oct 8, 2020 | 2020/0316909 | FINISHED COMPOSITE TEXTILE MATERIAL | Surface technology, coating | Crypton, Inc. · patent 11,235,556 granted from it |
| Sep 3, 2020 | 2020/0279334 | MACHINE LEARNING RISK FACTOR IDENTIFICATION AND MITIGATION SYSTEM | IT methods for management | Midwest Employers Casualty Company |
| Nov 14, 2019 | 2019/0344550 | TREATED FABRICS AND METHODS OF FORMING SAME | Surface technology, coating | Crypton, Inc. |
| Nov 14, 2019 | 2019/0344539 | TREATED FABRICS AND METHODS OF FORMING SAME | Surface technology, coating | Crypton, Inc. |
| Apr 4, 2019 | 2019/0100347 | SHIPPING INSERT | Handling | BERKLEY INTERNATIONAL, LLC · patent 10,507,950 granted from it |
What it applied for, 2024 to 2025: IT methods for management 1.
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.