Who owns the TENFLOW trademark?

The TENFLOW trademark is owned by TENAX CORPORATION.

What class is the TENFLOW trademark registered in?

The TENFLOW trademark is registered in Class 019 (Non-metallic building materials).

What is the serial number for TENFLOW?

The USPTO serial number for TENFLOW is 88732239.

What is the registration number for TENFLOW?

TENFLOW is registered under USPTO registration number 6138158.

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Updated Oct 30, 2026·22 searches this week

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Section 8 grace period ends

February 25, 2027

117 days remaining

TEN

TENFLOW

REGISTERED

Serial: 88732239
Reg: 6138158
Filed: Dec 18, 2019
Owner: TENAX CORPORATION

Materials, not of metal, for building and construction; rigid pipes, not of metal, for building; asphalt, pitch, tar and bitumen; transportable buildings, not of metal; monuments, not of metal.

What to file next

Section 8 declaration of continued use

When: Due between the fifth and sixth anniversary of registration.
Extensions and grace: A six-month grace period follows, with an added per-class fee.
If it is missed: A missed Section 8 cancels the registration, and there is no revival route for it.

How the Section 8 deadline 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 019Non-metallic building materials

US codes: 001, 012, 033, 050

First use anywhere: Mar 10, 2020

First use in commerce: Mar 10, 2020

Materials, not of metal, for building and construction; rigid pipes, not of metal, for building; asphalt, pitch, tar and bitumen; transportable buildings, not of metal; monuments, not of metal.

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

Status History

19 events

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

Aug 25, 2025

Code REM1

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

Nov 29, 2022

Code REAP

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Nov 29, 2022

Code ARAA

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Nov 29, 2022

Code TCCA

REGISTERED-PRINCIPAL REGISTER

Aug 25, 2020

Code R.PR

NOTICE OF ACCEPTANCE OF STATEMENT OF USE E-MAILED

Jul 23, 2020

Code SUNA

ALLOWED PRINCIPAL REGISTER - SOU ACCEPTED

Jul 22, 2020

Code CNPR

STATEMENT OF USE PROCESSING COMPLETE

Jun 30, 2020

Code SUPC

CASE ASSIGNED TO INTENT TO USE PARALEGAL

Jun 26, 2020

Code AITU

TEAS STATEMENT OF USE RECEIVED

Jun 08, 2020

Code EISU

USE AMENDMENT FILED

Jun 08, 2020

Code IUAF

NOA E-MAILED - SOU REQUIRED FROM APPLICANT

Apr 28, 2020

Code NOAM

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

Mar 03, 2020

Code NPUB

PUBLISHED FOR OPPOSITION

Mar 03, 2020

Code PUBO

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

Feb 12, 2020

Code NONP

APPROVED FOR PUB - PRINCIPAL REGISTER

Jan 29, 2020

Code CNSA

ASSIGNED TO EXAMINER

Jan 24, 2020

Code DOCK

NEW APPLICATION ENTERED

Dec 21, 2019

Code NWAP

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

Dec 21, 2019

Code NWOS

TENFLOW

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