Company Analysis

Edison International (EIX)

NYSE: EIX · Electric Services · Rosemead, CA · filing with the SEC since 1994
Grade6.7
◀ Past 6.5● Present 7.3▶ Future 5.8

Patents

US patents through Dec 31, 2025 · PatentsView, from the USPTO’s Open Data Portal · read Oct 27, 2026

19 patents granted to the 2 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 Edison International’s names, not what it holds today.

Patents granted
19
19 utility, 1976 to Dec 31, 2025
Granted in 2025
none
in the last year the record reads
Applications published
2
since 2001, to Dec 31, 2025
Names they are printed under
2
its own name
By yearGrantedApplications published
'81'82'83'84'85'16
Each pair is one calendar year. Applications are published about eighteen months after filing, so the newest years read low.
Under which name2 counted
Edison International Inc. its own name
US, as the owner printed on each patent
19 granted
0 published
Edison International its own name
named as the applicant on its applications, in US
0 granted
2 published
Newest grantseach row opens the USPTO’s own copy
GrantedPatentTitleFieldOwner as printed
May 14, 19854,517,542Voltage and temperature compensated time delay relayElectrical machinery, apparatus, energyEdison International Inc.
Apr 2, 19854,508,315Bidirectional valve sealMechanical elementsEdison International Inc.
Jan 8, 19854,492,895Arc resistant halogen headlamp and wiring scheme thereforElectrical machinery, apparatus, energyEdison International Inc.
Jan 1, 19854,491,358ClampHandlingEdison International Inc.
Feb 14, 19844,431,369Governor control linkage assembly for overspeed protection of turbines during restartingEngines, pumps, turbinesEdison International Inc.
Oct 18, 19834,410,830Vacuum fluorescent display device with substrate including a metal plateElectrical machinery, apparatus, energyEdison International Inc.
Sep 6, 19834,402,134Method of making an integrated display deviceElectrical machinery, apparatus, energyEdison International Inc.
Jul 5, 19834,391,847Coating for halogen lampsElectrical machinery, apparatus, energyEdison International Inc.
Jun 21, 19834,389,160High speed centrifugal pump and method for operating same at reduced noise levelsEngines, pumps, turbinesEdison International Inc.
May 24, 19834,385,257Lamp baseElectrical machinery, apparatus, energyEdison International Inc.
Newest applications publishedan application is a clue, never a plan
PublishedApplicationTitleFieldOwner as printed
Dec 1, 20162016/0348492SYSTEM AND METHOD FOR REDUCING SALT WATER INTRUSION INTO AN AQUIFEREnvironmental technologyEdison International
Dec 1, 20162016/0348486METHOD FOR REDUCING SALT WATER INTRUSION INTO AN AQUIFERCivil engineeringEdison International

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.

SI Assistanton EIX · research, not advice