Who owns the DSU trademark?

The DSU trademark is owned by Field Upgrading Limited.

What class is the DSU trademark registered in?

The DSU trademark is registered in Class 040 (Treatment & processing of materials).

What is the serial number for DSU?

The USPTO serial number for DSU is 87071457.

What is the registration number for DSU?

DSU is registered under USPTO registration number 5538089.

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DSU

USPTO Trademark Record

REGISTERED

DSU

SN 87071457·Reg 5538089·Filed Jun 14, 2016

Owner Field Upgrading Limited

Treatment of materials; recycling of waste and trash; air purification and treatment of water; printing services; food and drink preservation.

DSU (Serial No. 87071457), Registration No. 5538089, is a registered US trademark filed on Jun 14, 2016 by Field Upgrading Limited. This trademark covers Class 040 (Treatment & processing of materials).

Section 8/9 declaration window: August 14, 2028

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Full conflict analysis for DSU (SN 87071457) against the USPTO database with detailed risk factor explanations. AI-powered — takes ~1-2 min.

Mark Intelligence

DSU (Reg. #5538089) is a registered US trademark that has been protecting its owner, Field Upgrading Limited, since 2016. The mark covers Class 040 (Treatment & processing of materials). Goods and services include Treatment of materials; recycling of waste and trash; air purification and treatment of water; printing services; food a.... The mark faced 1 opposition proceeding during prosecution.

FILED

Jun 14, 2016

SERIAL

87071457

REG#

5538089

REGISTERED

Aug 14, 2018

Filing Information

StatusREGISTERED

Filing DateJun 14, 2016

Serial Number87071457

Registration No.5538089

Registration DateAug 14, 2018

Status DateDec 17, 2025

Published for OppositionMay 29, 2018

Filing Basis & Declarations

Standard Characters ClaimedSection 8 AcceptedSection 15 Acknowledged

Full Goods & Services

CLASSES

OFFICE

USPTO

COUNTRY

Class 040Treatment & processing of materials

US codes: 100, 103, 106

Treatment of materials; recycling of waste and trash; air purification and treatment of water; printing services; food and drink preservation.

This description is as filed with the USPTO and defines the scope of trademark protection.

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Status History

37 events

REGISTERED - SEC. 8 (6-YR) ACCEPTED & SEC. 15 ACK.

Dec 17, 2025

REGISTERED - SEC. 8 (6-YR) ACCEPTED & SEC. 15 ACK.

NOTICE OF ACCEPTANCE OF SEC. 8 & 15 - E-MAILED

Dec 17, 2025

NOTICE OF ACCEPTANCE OF SEC. 8 & 15 - E-MAILED

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

Dec 15, 2025

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

TEAS VOLUNTARY AMENDMENT RECEIVED

Jan 28, 2025

TEAS VOLUNTARY AMENDMENT RECEIVED

TEAS SECTION 8 & 15 RECEIVED

Jan 28, 2025

TEAS SECTION 8 & 15 RECEIVED

COURTESY REMINDER - SEC. 8 (6-YR) E-MAILED

Aug 14, 2023

COURTESY REMINDER - SEC. 8 (6-YR) E-MAILED

TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED

Sep 21, 2022

TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Sep 21, 2022

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

TEAS CHANGE OF DOMESTIC REPRESENTATIVES ADDRESS

Sep 21, 2022

TEAS CHANGE OF DOMESTIC REPRESENTATIVES ADDRESS

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Sep 21, 2022

TEAS CHANGE OF CORRESPONDENCE RECEIVED

TEAS CHANGE OF OWNER ADDRESS RECEIVED

Apr 28, 2020

TEAS CHANGE OF OWNER ADDRESS RECEIVED

TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED

Apr 28, 2020

TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Apr 28, 2020

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Apr 28, 2020

TEAS CHANGE OF CORRESPONDENCE RECEIVED

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

Apr 28, 2020

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

REGISTERED-PRINCIPAL REGISTER

Aug 14, 2018

REGISTERED-PRINCIPAL REGISTER

PUBLISHED FOR OPPOSITION

May 29, 2018

PUBLISHED FOR OPPOSITION

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

May 29, 2018

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

May 09, 2018

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

APPROVED FOR PUB - PRINCIPAL REGISTER

Apr 24, 2018

APPROVED FOR PUB - PRINCIPAL REGISTER

CORRESPONDENCE RECEIVED IN LAW OFFICE

Apr 10, 2018

CORRESPONDENCE RECEIVED IN LAW OFFICE

TEAS/EMAIL CORRESPONDENCE ENTERED

Apr 10, 2018

TEAS/EMAIL CORRESPONDENCE ENTERED

TEAS RESPONSE TO SUSPENSION INQUIRY RECEIVED

Apr 06, 2018

TEAS RESPONSE TO SUSPENSION INQUIRY RECEIVED

REPORT COMPLETED SUSPENSION CHECK CASE STILL SUSPENDED

Nov 07, 2017

REPORT COMPLETED SUSPENSION CHECK CASE STILL SUSPENDED

SUSPENSION CHECKED - TO ATTORNEY FOR ACTION

Nov 01, 2017

SUSPENSION CHECKED - TO ATTORNEY FOR ACTION

REPORT COMPLETED SUSPENSION CHECK CASE STILL SUSPENDED

Apr 19, 2017

REPORT COMPLETED SUSPENSION CHECK CASE STILL SUSPENDED

ASSIGNED TO LIE

Mar 29, 2017

ASSIGNED TO LIE

SUSPENSION CHECKED - TO ATTORNEY FOR ACTION

Mar 29, 2017

SUSPENSION CHECKED - TO ATTORNEY FOR ACTION

TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED

Oct 21, 2016

TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Oct 21, 2016

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

SUSPENSION LETTER WRITTEN

Sep 23, 2016

SUSPENSION LETTER WRITTEN

LETTER OF SUSPENSION E-MAILED

Sep 23, 2016

LETTER OF SUSPENSION E-MAILED

NOTIFICATION OF LETTER OF SUSPENSION E-MAILED

Sep 23, 2016

NOTIFICATION OF LETTER OF SUSPENSION E-MAILED

ASSIGNED TO EXAMINER

Sep 22, 2016

ASSIGNED TO EXAMINER

NOTICE OF PSEUDO MARK E-MAILED

Jun 22, 2016

NOTICE OF PSEUDO MARK E-MAILED

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

Jun 21, 2016

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

NEW APPLICATION ENTERED

Jun 17, 2016

NEW APPLICATION ENTERED

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Additional USPTO filings from the same owner.

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REGISTERED

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ABANDONED

FIE

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ABANDONED

LSF

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ABANDONED

Other Marks by Cheryl A. Clarkin, Esq.

Additional USPTO filings handled by the same attorney of record.

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ALL

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RCE

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RCM

RC MARINE ELECTRIC

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DSU

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Other Marks by Field Upgrading Limited

Other Marks by Cheryl A. Clarkin, Esq.

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