- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F27D - Details or accessories of furnaces, kilns, ovens, or retorts, in so far as they are of kinds occurring in more than one kind of furnace
- F27D 99/00 - Subject matter not provided for in other groups of this subclass
Patent holdings for IPC class F27D 99/00
Total number of patents in this class: 684
10-year publication summary
|
62
|
43
|
57
|
49
|
43
|
47
|
47
|
57
|
63
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Novelis Inc. | 702 |
16 |
| Paul Wurth S.A. | 407 |
13 |
| Metso Metals Oy | 223 |
13 |
| SMS Group GmbH | 1077 |
12 |
| Danieli & C. Officine Meccaniche S.p.A. | 704 |
11 |
| Molten Metal Equipment Innovations, LLC | 97 |
11 |
| Ebner Industrieofenbau GmbH | 139 |
10 |
| Air Products and Chemicals, Inc. | 1425 |
8 |
| Outotec (Finland) Oy | 489 |
8 |
| ThyssenKrupp AG | 3207 |
8 |
| Illinois Tool Works Inc. | 11379 |
7 |
| Corning Incorporated | 10087 |
7 |
| Fives Stein | 99 |
7 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 3581 |
7 |
| Linde Aktiengesellschaft | 1553 |
7 |
| IHI Corporation | 3354 |
6 |
| Inductotherm Corp. | 158 |
6 |
| JFE Steel Corporation | 6527 |
6 |
| Johns Manville | 967 |
6 |
| Technische Universitat Bergakademie Freiberg | 114 |
6 |
| Other owners | 509 |