Method for producing an optical element of glass
US-12565439-B2 · Mar 3, 2026 · US
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Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins
Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C03B29/00 |
| Official title | Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins |
| Display label | Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins |
| Total patents | 22 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2017 | 2 |
| 2019 | 3 |
| 2020 | 1 |
| 2021 | 1 |
| 2022 | 4 |
| 2023 | 3 |
| 2024 | 2 |
| 2025 | 4 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Toughenable glass article with negative relative thermal length change potential
US-12497327-B2 · Dec 16, 2025 · US
Droplet generator nozzle
US-2025344311-A1 · Nov 6, 2025 · US
Glass articles made from laminated glass tubing and systems and methods for converting laminated glass tubing into the glass articles
US-2025296866-A1 · Sep 25, 2025 · US
Glass articles made from laminated glass tubing and systems and methods for converting laminated glass tubing into the glass articles
US-12344544-B2 · Jul 1, 2025 · US
Thin glass plate processing apparatus and method
US-2024317626-A1 · Sep 26, 2024 · US
Quartz glass tube and method of manufacturing the same
US-11919794-B2 · Mar 5, 2024 · US
Method for producing an optical element of glass
US-2023416133-A1 · Dec 28, 2023 · US
Method for modification of surface of optical fiber preform
US-11733459-B2 · Aug 22, 2023 · US
Sealed glass packages and method of making same
US-2023167024-A1 · Jun 1, 2023 · US
Toughenable glass article with negative relative thermal length change potential
US-2022332636-A1 · Oct 20, 2022 · US
Quartz glass tube and method of manufacturing the same
US-2022306513-A1 · Sep 29, 2022 · US
Glass articles made from laminated glass tubing and systems and methods for converting laminated glass tubing into the glass articles
US-2022177347-A1 · Jun 9, 2022 · US
Glass articles made from laminated glass tubing and systems and methods for converting laminated glass tubing into the glass articles
US-11279647-B2 · Mar 22, 2022 · US
Glass articles made from laminated glass tubing and systems and methods for converting laminated glass tubing into the glass articles
US-11078103-B2 · Aug 3, 2021 · US
Method for modification of surface of optical fiber preform
US-2020209475-A1 · Jul 2, 2020 · US
Method for controlling the thickness of a substrate
US-10501359-B2 · Dec 10, 2019 · US
Glass articles made from laminated glass tubing and systems and methods for converting laminated glass tubing into the glass articles
US-2019160788-A1 · May 30, 2019 · US
Glass articles made from laminated glass tubing and systems and methods for converting laminated glass tubing into the glass articles
US-2019161383-A1 · May 30, 2019 · US
Method for controlling the thickness of a substrate
US-2017225994-A1 · Aug 10, 2017 · US