DSU Trademark

Trademark Overview

On Tuesday, June 14, 2016, a trademark application was filed for DSU with the United States Patent and Trademark Office. The USPTO has given the DSU trademark a serial number of 87071457. The federal status of this trademark filing is SECTION 8 & 15 - ACCEPTED AND ACKNOWLEDGED as of Wednesday, December 17, 2025. This trademark is owned by Field Upgrading Limited. The DSU trademark is filed in the Treatment & Processing of Materials Services category with the following description:

desulphurization and upgrading of oil to produce bunker fuels for use in the shipping industry; treatment of materials, namely, the desulphurization of refinery bottoms, intermediate streams, heavy oil, oil shale and bitumen; treatment of materials to remove of metals and acids from oil and to increase the API gravity of oil
dsu

General Information

Serial Number87071457
Word MarkDSU
Filing DateTuesday, June 14, 2016
Status702 - SECTION 8 & 15 - ACCEPTED AND ACKNOWLEDGED
Status DateWednesday, December 17, 2025
Registration Number5538089
Registration DateTuesday, August 14, 2018
Mark Drawing4 - Illustration: Drawing with word(s) / letter(s) / number(s) in Block form
Published for Opposition DateTuesday, May 29, 2018

Trademark Statements

Goods and Servicesdesulphurization and upgrading of oil to produce bunker fuels for use in the shipping industry; treatment of materials, namely, the desulphurization of refinery bottoms, intermediate streams, heavy oil, oil shale and bitumen; treatment of materials to remove of metals and acids from oil and to increase the API gravity of oil
Pseudo MarkDESULPHURIZATION AND UPGRADING

Classification Information

International Class040 - Treatment of materials.
US Class Codes100, 103, 106
Class Status Code6 - Active
Class Status DateTuesday, June 21, 2016
Primary Code040
First Use Anywhere DateNOT AVAILABLE
First Use In Commerce DateNOT AVAILABLE

Trademark Owner History

Party NameField Upgrading Limited
Party Type30 - Original Registrant
Legal Entity Type03 - Corporation
AddressCalgary, Alberta T2G1B1
CA
Party NameField Upgrading Limited
Party Type20 - Owner at Publication
Legal Entity Type03 - Corporation
AddressCalgary, Alberta T2G1B1
CA
Party NameField Upgrading Limited
Party Type10 - Original Applicant
Legal Entity Type03 - Corporation
AddressCalgary, Alberta T2G1B1
CA

Trademark Events

Event DateEvent Description
Friday, June 17, 2016NEW APPLICATION ENTERED
Tuesday, June 21, 2016NEW APPLICATION OFFICE SUPPLIED DATA ENTERED
Wednesday, June 22, 2016NOTICE OF PSEUDO MARK E-MAILED
Thursday, September 22, 2016ASSIGNED TO EXAMINER
Friday, September 23, 2016SUSPENSION LETTER WRITTEN
Friday, September 23, 2016LETTER OF SUSPENSION E-MAILED
Friday, September 23, 2016NOTIFICATION OF LETTER OF SUSPENSION E-MAILED
Friday, October 21, 2016TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED
Friday, October 21, 2016ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED
Wednesday, March 29, 2017ASSIGNED TO LIE
Wednesday, March 29, 2017SUSPENSION CHECKED - TO ATTORNEY FOR ACTION
Wednesday, April 19, 2017REPORT COMPLETED SUSPENSION CHECK CASE STILL SUSPENDED
Wednesday, November 1, 2017SUSPENSION CHECKED - TO ATTORNEY FOR ACTION
Tuesday, November 7, 2017REPORT COMPLETED SUSPENSION CHECK CASE STILL SUSPENDED
Friday, April 6, 2018TEAS RESPONSE TO SUSPENSION INQUIRY RECEIVED
Tuesday, April 10, 2018CORRESPONDENCE RECEIVED IN LAW OFFICE
Tuesday, April 10, 2018TEAS/EMAIL CORRESPONDENCE ENTERED
Tuesday, April 24, 2018APPROVED FOR PUB - PRINCIPAL REGISTER
Wednesday, May 9, 2018NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED
Tuesday, May 29, 2018PUBLISHED FOR OPPOSITION
Tuesday, May 29, 2018OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED
Tuesday, August 14, 2018REGISTERED-PRINCIPAL REGISTER
Tuesday, April 28, 2020TEAS CHANGE OF OWNER ADDRESS RECEIVED
Tuesday, April 28, 2020TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED
Tuesday, April 28, 2020ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED
Tuesday, April 28, 2020TEAS CHANGE OF CORRESPONDENCE RECEIVED
Tuesday, April 28, 2020APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED
Wednesday, September 21, 2022TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED
Wednesday, September 21, 2022ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED
Wednesday, September 21, 2022TEAS CHANGE OF DOMESTIC REPRESENTATIVES ADDRESS
Wednesday, September 21, 2022TEAS CHANGE OF CORRESPONDENCE RECEIVED
Monday, August 14, 2023COURTESY REMINDER - SEC. 8 (6-YR) E-MAILED
Tuesday, January 28, 2025TEAS VOLUNTARY AMENDMENT RECEIVED
Tuesday, January 28, 2025TEAS SECTION 8 & 15 RECEIVED
Monday, December 15, 2025CASE ASSIGNED TO POST REGISTRATION PARALEGAL
Wednesday, December 17, 2025REGISTERED - SEC. 8 (6-YR) ACCEPTED & SEC. 15 ACK.
Wednesday, December 17, 2025NOTICE OF ACCEPTANCE OF SEC. 8 & 15 - E-MAILED

Related Keywords

materials treatment desulphurization heavy bitumen shale remove increase gravity from