C04B 7/4469
In shaft or vertical kilns
Official title: {in shaft or vertical kilns}
C04B7/4469 (In shaft or vertical kilns) appears on 8 US grants and 14 published applications in this corpus.
Search patents in C04B- Granted patents
- 8
- Published applications
- 14
- Assignees
- 10
- Inventors
- 34
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2015 | 0 | 3 |
| 2016 | 1 | 0 |
| 2017 | 1 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 1 |
| 2021 | 2 | 0 |
| 2022 | 0 | 2 |
| 2023 | 0 | 1 |
| 2024 | 0 | 4 |
| 2025 | 2 | 2 |
| 2026 | 1 | 0 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Device and method for the thermal treatment of a mineral feedstock30 Jun 2026US 12,668,537 B2thyssenkrupp AG
- Device for producing supplementary cementitious material4 Nov 2025US 12,459,861 B2Cemgreen APS
- Systems, methods and devices for cement manufacture10 Jun 2025US 12,325,671 B2Furno Materials Inc.
- Vertical ring shaft kiln21 Dec 2021US 11,204,198 B2
- Low NOx calciner13 Apr 2021US 10,974,992 B2FLSmidth A/S
- Vertical kiln to for cement manufacturing4 Sep 2025US 2025/0276936 A1Furno Materials Inc.
- Device and method for producing supplementary cementitious materials2 Jan 2025US 2025/0002405 A1Cemgreen APS
- Parallel-flow regenerative shaft kiln and method for burning carbonate rock31 Oct 2024US 2024/0361074 A1Maerz Ofenbau AG
- Device and method for the thermal treatment of a mineral feedstock9 May 2024US 2024/0150236 A1thyssenkrupp AG
- Processes and Methods for the Calcination of Materials1 Feb 2024US 2024/0034672 A1Calix, Inc.
Most cited
By later US patents