Who owns the KLEAR-FLO trademark?

The KLEAR-FLO trademark is owned by WILLET HAUSER COMPANY, LLC.

What class is the KLEAR-FLO trademark registered in?

The KLEAR-FLO trademark is registered in Class 037 (Construction, installation & repair services).

What is the serial number for KLEAR-FLO?

The USPTO serial number for KLEAR-FLO is 87388420.

What is the registration number for KLEAR-FLO?

KLEAR-FLO is registered under USPTO registration number 5311064.

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Updated Nov 8, 2026·36 searches this week

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Section 8 & 9 renewal window

October 18, 2027

343 days remaining

KLE

KLEAR-FLO

REGISTERED

Serial: 87388420
Reg: 5311064
Filed: Mar 28, 2017
Owner: WILLET HAUSER COMPANY, LLC

Construction services; installation and repair services; mining extraction, oil and gas drilling.

What to file next

Section 9 renewal, filed with a Section 8 declaration

When: Due between the ninth and tenth anniversary of registration, then before each tenth anniversary after that.
Extensions and grace: A six-month grace period follows, with an added per-class fee.
If it is missed: A missed renewal cancels the registration, and there is no revival route for it.

How Section 9 renewal works

General information about USPTO practice, not legal advice. The register is the authority, and a filing that has not yet posted can change what is owed.

Full Goods & Services

Class 037Construction, installation & repair services

US codes: 100, 103, 106

First use anywhere: Dec 31, 2003

First use in commerce: Dec 31, 2003

Construction services; installation and repair services; mining extraction, oil and gas drilling.

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

Status History

21 events

COURTESY REMINDER - SEC. 8 (10-YR)/SEC. 9 E-MAILED

Oct 17, 2026

Code REM2

TEAS CHANGE OF OWNER ADDRESS RECEIVED

Jul 16, 2026

Code COAR

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

Jul 16, 2026

Code CHAN

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

Jul 16, 2026

Code REAP

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Jul 16, 2026

Code ARAA

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Jul 16, 2026

Code TCCA

AUTOMATIC UPDATE OF ASSIGNMENT OF OWNERSHIP

Aug 30, 2023

Code ASGN

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

Jul 19, 2023

Code APRE

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

Jul 19, 2023

Code C15A

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

Jul 19, 2023

Code NA85

TEAS SECTION 8 & 15 RECEIVED

Jan 23, 2023

Code E815

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

Oct 17, 2022

Code REM1

REGISTERED-PRINCIPAL REGISTER

Oct 17, 2017

Code R.PR

PUBLISHED FOR OPPOSITION

Aug 01, 2017

Code PUBO

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

Aug 01, 2017

Code NPUB

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

Jul 12, 2017

Code NONP

APPROVED FOR PUB - PRINCIPAL REGISTER

Jun 21, 2017

Code CNSA

ASSIGNED TO EXAMINER

Jun 20, 2017

Code DOCK

NOTICE OF PSEUDO MARK E-MAILED

Apr 01, 2017

Code MPMK

NEW APPLICATION ENTERED

Mar 31, 2017

Code NWAP

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

Mar 31, 2017

Code NWOS

KLEAR-FLO

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