- All sections
- C - Chemistry; metallurgy
- C03B - Manufacture or shaping of glass, or of mineral or slag wool; supplementary processes in the manufacture or shaping of glass, or of mineral or slag wool
- C03B 5/225 - Refining
Patent holdings for IPC class C03B 5/225
Total number of patents in this class: 331
10-year publication summary
|
28
|
14
|
21
|
10
|
26
|
19
|
47
|
20
|
21
|
8
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Owens-Brockway Glass Container Inc. | 716 |
69 |
| Corning Incorporated | 9932 |
55 |
| Asahi Glass Company, Limited | 2985 |
47 |
| Nippon Electric Glass Co., Ltd. | 2299 |
21 |
| SCHOTT AG | 1675 |
21 |
| AvanStrate Inc. | 109 |
18 |
| Johns Manville | 980 |
17 |
| Agc, Inc. | 4029 |
15 |
| AGC Glass Europe | 1049 |
9 |
| Nippon Sheet Glass Company, Limited | 992 |
6 |
| Beteiligungen Sorg GmbH & Co. KG | 45 |
4 |
| Avanstrate Korea Inc. | 14 |
3 |
| Vitro Flat Glass LLC | 419 |
3 |
| Air Products and Chemicals, Inc. | 1448 |
2 |
| China Building Materials Academy | 19 |
2 |
| Gas Technology Institute | 374 |
2 |
| Nitto Boseki Co., Ltd. | 261 |
2 |
| Praxair Technology, Inc. | 1367 |
2 |
| Tunghsu Group Co., Ltd. | 58 |
2 |
| Avanstrate Taiwan Inc. | 8 |
2 |
| Other owners | 29 |