Trademark owner · USPTO register · rebuilt nightly

Elkem ASA

51 live US trademarks, filing since 1940. 1 new application filed this year.

Live marks
51
registered + pending
Registered
50
on the Principal Register
Pending
1
applications in progress
Filed in 2026
1
by filing date
Classes used
12
of 45 Nice classes
First filing
1940
86 years on the register
At a glanceplain-language reads of the register
Mostly common metals: 31 of 51 live marks are in Class 6. Chemicals (Class 1) is next with 20.
8 registrations have a maintenance filing due in the next 12 months.
Filing activityapplications per year, by filing date
0 5 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 1 so far

Marks held on the register, by filing date. 2026 is year to date.

Portfolio by classlive marks · rank among filers in that class

A multi-class mark counts once per class. Rank shown where the owner is in the class's top 50.

Latest activity

What Elkem ASA filed most recently.

MarkClassFiledBasisStatusSerial
CAST 42 Oct 8, 2026 — pending 50150979
ELKINOC 6 Jul 7, 2025 — registered Apr 21 79428934
POLARSI 1 Nov 8, 2024 — registered Apr 1 79411288
PIPEMAG 6 Jun 18, 2024 — registered Jan 27 98606603
SIOXX 19 Jan 22, 2024 — registered Dec 17 98369259
SILPERIOR 1 Feb 28, 2023 — registered Oct 10 79365799
EMSIL-DRY 1, 19 Aug 26, 2022 — registered May 14 79352185
TENBLOC 6 Jun 17, 2021 — registered Jan 10 79321475
ELKEM 1, 6, 17, 19, 40, 42 Mar 3, 2021 — registered Oct 10 90557787
E ELKEM 1, 6, 17, 19, 40, 42 Mar 3, 2021 — registered Oct 10 90557846
Recently registeredlast 12 months
ELKINOC · Cl. 6 · Reg. 8,217,573
Apr 21, 2026
PIPEMAG · Cl. 6 · Reg. 8,120,382
Jan 27, 2026

Registration starts the maintenance clock: a Section 8 declaration is due between years 5 and 6.

Maintenance windows aheadnext 12 months · from registration dates
ELKEM SILICONES · Reg. 6,209,162 · registered Dec 2020
Section 8 declaration (years 5–6)
Dec 1, 2025 → Dec 1, 2026
SIPEN · Reg. 6,225,698 · registered Dec 2020
Section 8 declaration (years 5–6)
Dec 22, 2025 → Dec 22, 2026
STAINSEED · Reg. 6,264,759 · registered Feb 2021
Section 8 declaration (years 5–6)
Feb 9, 2026 → Feb 9, 2027
WEARSEED · Reg. 6,264,760 · registered Feb 2021
Section 8 declaration (years 5–6)
Feb 9, 2026 → Feb 9, 2027
SIDISTAR · Reg. 3,208,202 · registered Feb 2007
Section 8 & 9 renewal (year 20)
Feb 13, 2026 → Feb 13, 2027
PURISIL · Reg. 6,315,930 · registered Apr 2021
Section 8 declaration (years 5–6)
Apr 6, 2026 → Apr 6, 2027
ARTICSIL · Reg. 6,322,483 · registered Apr 2021
Section 8 declaration (years 5–6)
Apr 13, 2026 → Apr 13, 2027
STAINSIL · Reg. 6,322,484 · registered Apr 2021
Section 8 declaration (years 5–6)
Apr 13, 2026 → Apr 13, 2027

A filing missed by the due date enters a six-month grace period, then the registration cancels.

Common questions

About Elkem ASA trademarks.

How many trademarks does Elkem ASA have?

51 live US trademarks as of October 23, 2026: 50 registered and 1 pending applications. 1 were filed in 2026 so far.

What does Elkem ASA sell, according to its trademarks?

Mostly common metals (Class 6, 31 live marks). Also chemicals (Class 1) and building materials (Class 19).

Who owns the S M Z trademark?

S M Z is owned by Elkem ASA. It was registered on January 28, 1941 (Reg. No. 0384665) and is live. The same owner holds 50 other live US marks.

When did Elkem ASA first file a trademark?

Its oldest live US filing dates from 1940: S M Z, filed September 7, 1940.

Know the morning after Elkem ASA files.

Watch this company in Thorgate and get an alert for every new application, registration, publication and lapse, with the opposition deadline already worked out. Or monitor your own marks for conflicts with theirs.

Data: USPTO trademark bulk files, processed nightly by Thorgate. Last rebuilt October 23, 2026. Counts cover the US federal register only, not state or foreign marks. Owner names are shown as recorded by the USPTO. This page reports public-record facts and dates and is not legal advice. For the official record of any mark, follow its serial number to USPTO TSDR.