Who owns the K-FLEX trademark?

The K-FLEX trademark is owned by KING INDUSTRIES, INC..

What class is the K-FLEX trademark registered in?

The K-FLEX trademark is registered in Class 001 (Chemicals for industrial, scientific & agricultural use).

What is the serial number for K-FLEX?

The USPTO serial number for K-FLEX is 73489567.

What is the registration number for K-FLEX?

K-FLEX is registered under USPTO registration number 1367235.

Sealvo

Home Search: K-FLEXK-FLEX #73489567

Back

Updated Sep 23, 2026·23 searches this week

View on USPTO TSDR Find similar marks

KFL

USPTO Trademark Record

REGISTERED

K-FLEX

SN 73489567·Reg 1367235·Filed Jul 12, 1984

Owner KING INDUSTRIES, INC.

Chemicals for use in industry, science and photography, as well as in agriculture, horticulture and forestry; unprocessed artificial resins, unprocessed plastics; fire extinguishing and fire prevention compositions; tempering and soldering preparations; substances for tanning animal skins and hides; adhesives for use in industry; compost, manures, fertilizers; biological preparations for use in industry and science.

K-FLEX (Serial No. 73489567), Registration No. 1367235, is a registered US trademark filed on Jul 12, 1984 by KING INDUSTRIES, INC.. This trademark covers Class 001 (Chemicals for industrial, scientific & agricultural use).

Section 8/9 declaration window: October 29, 2035

Conflict Analysis

Full conflict analysis for K-FLEX (SN 73489567) against the USPTO database with detailed risk factor explanations. AI-powered — takes ~1-2 min.

Mark Intelligence

K-FLEX (Reg. #1367235) is a registered US trademark that has been protecting its owner, KING INDUSTRIES, INC., since 1984. The mark covers Class 001 (Chemicals for industrial, scientific & agricultural use). Goods and services include Chemicals for use in industry, science and photography, as well as in agriculture, horticulture and forestry; unprocesse.... The mark faced 1 opposition proceeding during prosecution.

FILED

Jul 12, 1984

SERIAL

73489567

REG#

1367235

REGISTERED

Oct 29, 1985

Filing Information

StatusREGISTERED

Filing DateJul 12, 1984

Serial Number73489567

Registration No.1367235

Registration DateOct 29, 1985

Status DateOct 03, 2025

Published for OppositionMay 14, 1985

Filing Basis & Declarations

Standard Characters ClaimedFiled as Use ApplicationUse Application CurrentlySection 8 AcceptedSection 15 AcknowledgedTrademark

Full Goods & Services

CLASSES

OFFICE

USPTO

COUNTRY

Class 001Chemicals for industrial, scientific & agricultural use

US codes: 006

First use anywhere: Jan 28, 1982

First use in commerce: Jan 28, 1982

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

Run a conflict check

Search by serial number, mark name, or logo. See conflicting marks ranked by risk with clear explanations of what contributed.

Run conflict check

Status History

28 events

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

Oct 03, 2025

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

REGISTERED - SEC. 8 (10-YR) ACCEPTED/SEC. 9 GRANTED

Oct 03, 2025

REGISTERED - SEC. 8 (10-YR) ACCEPTED/SEC. 9 GRANTED

REGISTERED AND RENEWED (THIRD RENEWAL - 10 YRS)

Oct 03, 2025

REGISTERED AND RENEWED (THIRD RENEWAL - 10 YRS)

NOTICE OF ACCEPTANCE OF SEC. 8 & 9 - E-MAILED

Oct 03, 2025

NOTICE OF ACCEPTANCE OF SEC. 8 & 9 - E-MAILED

TEAS SECTION 8 & 9 RECEIVED

Jun 10, 2025

TEAS SECTION 8 & 9 RECEIVED

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

Oct 29, 2024

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

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

Sep 19, 2015

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

REGISTERED - SEC. 8 (10-YR) ACCEPTED/SEC. 9 GRANTED

Sep 19, 2015

REGISTERED - SEC. 8 (10-YR) ACCEPTED/SEC. 9 GRANTED

REGISTERED AND RENEWED (SECOND RENEWAL - 10 YRS)

Sep 19, 2015

REGISTERED AND RENEWED (SECOND RENEWAL - 10 YRS)

NOTICE OF ACCEPTANCE OF SEC. 8 & 9 - E-MAILED

Sep 19, 2015

NOTICE OF ACCEPTANCE OF SEC. 8 & 9 - E-MAILED

TEAS SECTION 8 & 9 RECEIVED

Aug 20, 2015

TEAS SECTION 8 & 9 RECEIVED

CASE FILE IN TICRS

Jan 06, 2006

CASE FILE IN TICRS

REGISTERED - SEC. 8 (10-YR) ACCEPTED/SEC. 9 GRANTED

Dec 29, 2005

REGISTERED - SEC. 8 (10-YR) ACCEPTED/SEC. 9 GRANTED

REGISTERED AND RENEWED (FIRST RENEWAL - 10 YRS)

Dec 29, 2005

REGISTERED AND RENEWED (FIRST RENEWAL - 10 YRS)

ASSIGNED TO PARALEGAL

Dec 28, 2005

ASSIGNED TO PARALEGAL

TEAS SECTION 8 & 9 RECEIVED

Oct 31, 2005

TEAS SECTION 8 & 9 RECEIVED

REGISTERED - COMBINED SECTION 8 (10-YR) & SEC. 9 FILED

Oct 31, 2005

REGISTERED - COMBINED SECTION 8 (10-YR) & SEC. 9 FILED

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Jul 15, 2004

TEAS CHANGE OF CORRESPONDENCE RECEIVED

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

Feb 25, 1992

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

REGISTERED - SEC. 8 (6-YR) & SEC. 15 FILED

Oct 11, 1991

REGISTERED - SEC. 8 (6-YR) & SEC. 15 FILED

REGISTERED-PRINCIPAL REGISTER

Oct 29, 1985

REGISTERED-PRINCIPAL REGISTER

PUBLISHED FOR OPPOSITION

May 14, 1985

PUBLISHED FOR OPPOSITION

NOTICE OF PUBLICATION

Apr 13, 1985

NOTICE OF PUBLICATION

CORRESPONDENCE RECEIVED IN LAW OFFICE

Feb 28, 1985

CORRESPONDENCE RECEIVED IN LAW OFFICE

APPROVED FOR PUB - PRINCIPAL REGISTER

Feb 28, 1985

APPROVED FOR PUB - PRINCIPAL REGISTER

ASSIGNED TO EXAMINER

Feb 27, 1985

ASSIGNED TO EXAMINER

NON-FINAL ACTION MAILED

Jan 07, 1985

NON-FINAL ACTION MAILED

ASSIGNED TO EXAMINER

Dec 03, 1984

ASSIGNED TO EXAMINER

Other Marks by KING INDUSTRIES, INC.

Additional USPTO filings from the same owner.

KPO

K-POL

86273487

King Industries, Inc.

REGISTERED

NAS

NA-SUL 729

98830545

King Industries, Inc.

REGISTERED

NAS

NA-SUL ZS

98830599

King Industries, Inc.

REGISTERED

KKA

K-KAT

74503795

King Industries, Inc.

REGISTERED

Other Marks in Class 001 — Chemicals for industrial, scientific & agricultural use

Recently filed and registered marks in the same international class.

KFL

K-FLEX

74540133

LANXESS CORPORATION

REGISTERED

NAC

NACHURS K-FLEX

86586397

NACHURS ALPINE SOLUTIONS, LLC

REGISTERED

FLE

FLEX

85753043

ENVIROTECH SERVICES, LLC

REGISTERED

FLE

FLEX

90980633

Swift IP, LLC

REGISTERED

Other Marks by Kenneth F. Florek

Additional USPTO filings handled by the same attorney of record.

180

1-800-FOR-BAIL

78548102

REGISTERED

KPO

K-POL

86273487

REGISTERED

PUN

PUNTO

79434576

REGISTERED

WIN

WINLEVI

88517589

REGISTERED

K-FLEX

Run a conflict check

Other Marks by KING INDUSTRIES, INC.

Other Marks in Class 001 — Chemicals for industrial, scientific & agricultural use

Other Marks by Kenneth F. Florek

Get pre-filing clearance

Search 15M+ trademarks

Resources

Company