IMSR Trademark
Trademark Overview
On Thursday, August 28, 2025, a trademark application was filed for IMSR with the United States Patent and Trademark Office. The USPTO has given the IMSR trademark a serial number of 99363191. The federal status of this trademark filing is NON-FINAL ACTION - MAILED as of Monday, June 8, 2026. This trademark is owned by Terrestrial Energy Inc.. The IMSR trademark is filed in the Environmental Control Instrument Products category with the following description:
Boiler pipe tubes for heating installations; Oil and gas burners for industrial use; Fluidized bed combustion burners; Solid fuel burners; Furnaces for industrial use; Heat exchangers not being parts of machines, for transferring heat between fluid streams; Heating furnaces for industrial purposes; Heating installations for industrial use; Industrial heating installations; Nuclear cogeneration plants; Nuclear fuel and nuclear moderating material installations for processing in the nature of nuclear power plants; Nuclear generators; Nuclear power plants; Nuclear reactors; Steam generators; Steam superheaters for industrial purposes; Thermal fluid heating installations; Thermal treatment furnaces; Waste disposal furnaces; Water heaters; Systems for on-power refueling and thermal energy supply consisting of nuclear reactors using liquid fuel, heat exchangers, steam generators, and fuel handling and refueling apparatus for nuclear reactors; Power plants; Alternative energy generation power...
General Information
| Serial Number | 99363191 |
| Word Mark | IMSR |
| Filing Date | Thursday, August 28, 2025 |
| Status | 641 - NON-FINAL ACTION - MAILED |
| Status Date | Monday, June 8, 2026 |
| Registration Number | 0000000 |
| Registration Date | NOT AVAILABLE |
| Mark Drawing | 4 - Illustration: Drawing with word(s) / letter(s) / number(s) in Block form |
| Published for Opposition Date | NOT AVAILABLE |
Trademark Statements
| Goods and Services | Boiler pipe tubes for heating installations; Oil and gas burners for industrial use; Fluidized bed combustion burners; Solid fuel burners; Furnaces for industrial use; Heat exchangers not being parts of machines, for transferring heat between fluid streams; Heating furnaces for industrial purposes; Heating installations for industrial use; Industrial heating installations; Nuclear cogeneration plants; Nuclear fuel and nuclear moderating material installations for processing in the nature of nuclear power plants; Nuclear generators; Nuclear power plants; Nuclear reactors; Steam generators; Steam superheaters for industrial purposes; Thermal fluid heating installations; Thermal treatment furnaces; Waste disposal furnaces; Water heaters; Systems for on-power refueling and thermal energy supply consisting of nuclear reactors using liquid fuel, heat exchangers, steam generators, and fuel handling and refueling apparatus for nuclear reactors; Power plants; Alternative energy generation power plants; Power plant technology |
| Pseudo Mark | INTEGRAL MOLTEN SALT REACTOR |
Classification Information
| International Class | 011 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply, and sanitary purposes. |
| US Class Codes | 013, 021, 023, 024, 031, 034 |
| Class Status Code | 6 - Active |
| Class Status Date | Thursday, August 28, 2025 |
| Primary Code | 011 |
| First Use Anywhere Date | NOT AVAILABLE |
| First Use In Commerce Date | NOT AVAILABLE |
Trademark Owner History
| Party Name | Terrestrial Energy Inc. |
| Party Type | 10 - Original Applicant |
| Legal Entity Type | 03 - Corporation |
| Address | Charlotte, NC 28217
US |
Trademark Events
| Event Date | Event Description |
| Thursday, August 28, 2025 | NEW APPLICATION ENTERED |
| Thursday, August 28, 2025 | APPLICATION FILING RECEIPT MAILED |
| Sunday, January 18, 2026 | NEW APPLICATION OFFICE SUPPLIED DATA ENTERED |
| Tuesday, January 20, 2026 | ASSIGNED TO EXAMINER |
| Tuesday, January 20, 2026 | NON-FINAL ACTION WRITTEN |
| Tuesday, January 20, 2026 | NON-FINAL ACTION E-MAILED |
| Tuesday, January 20, 2026 | NOTIFICATION OF NON-FINAL ACTION E-MAILED |
| Monday, April 20, 2026 | TEAS CHANGE OF OWNER ADDRESS RECEIVED |
| Monday, April 20, 2026 | APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED |
| Monday, April 20, 2026 | TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED |
| Monday, April 20, 2026 | ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED |
| Monday, April 20, 2026 | TEAS CHANGE OF CORRESPONDENCE RECEIVED |
| Monday, April 20, 2026 | APPLICATION EXTENSION TO RESPONSE PERIOD - RECEIVED |
| Monday, April 20, 2026 | APPLICATION EXTENSION GRANTED/RECEIPT PROVIDED |
| Wednesday, May 6, 2026 | TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED |
| Wednesday, May 6, 2026 | ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED |
| Wednesday, May 6, 2026 | TEAS CHANGE OF CORRESPONDENCE RECEIVED |
| Thursday, May 7, 2026 | TEAS RESPONSE TO OFFICE ACTION RECEIVED |
| Thursday, May 7, 2026 | CORRESPONDENCE RECEIVED IN LAW OFFICE |
| Thursday, May 7, 2026 | TEAS/EMAIL CORRESPONDENCE ENTERED |
| Monday, June 8, 2026 | NON-FINAL ACTION WRITTEN |
| Monday, June 8, 2026 | NON-FINAL ACTION E-MAILED |
| Monday, June 8, 2026 | NOTIFICATION OF NON-FINAL ACTION E-MAILED |
