Manufacturing tungsten bronze glass ceramic
US-12590026-B2 · Mar 31, 2026 · US
for crystal glass, e.g. lead-free crystal glass
for crystal glass, e.g. lead-free crystal glass · 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 | C03C4/0028 |
| Official title | {for crystal glass, e.g. lead-free crystal glass} |
| Display label | for crystal glass, e.g. lead-free crystal glass |
| Total patents | 44 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 7 |
| 2017 | 3 |
| 2018 | 4 |
| 2019 | 4 |
| 2020 | 5 |
| 2021 | 2 |
| 2022 | 3 |
| 2023 | 10 |
| 2024 | 1 |
| 2025 | 3 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Glass-ceramic and crystalline articles and methods of making same
US-2025178951-A1 · Jun 5, 2025 · US
Crystallized glass of three-dimensional shape, chemically strengthened glass of three-dimensional shape, and method for producing crystallized glass of three-dimensional shape and chemically strengthened glass of three-dimensional shape
US-2025178950-A1 · Jun 5, 2025 · US
Crystallized glass of three-dimensional shape, chemically strengthened glass of three-dimensional shape, and method for producing crystallized glass of three-dimensional shape and chemically strengthened glass of three-dimensional shape
US-12240779-B2 · Mar 4, 2025 · US
High index low density glass
US-12122712-B2 · Oct 22, 2024 · US
Method for treating a lead-containing glass that makes it possible to limit the migration in solution of the lead contained in this glass
US-11851365-B2 · Dec 26, 2023 · US
Crystallized glass
US-2023357070-A1 · Nov 9, 2023 · US
Manufacturing tungsten bronze glass ceramic
US-2023322607-A1 · Oct 12, 2023 · US
Chemically strengthened glass and production method therefor
US-11731901-B2 · Aug 22, 2023 · US
Glass for chemical strengthening, chemically strengthened glass, and electronic device case
US-2023250015-A1 · Aug 10, 2023 · US
Glass for chemical strengthening, chemically strengthened glass, and electronic device case
US-11718556-B2 · Aug 8, 2023 · US
Pore-free ceramic component
US-11697619-B2 · Jul 11, 2023 · US
Lithium silicate glass ceramic comprising tin
US-2023202906-A1 · Jun 29, 2023 · US
Lithium silicate glass ceramic comprising copper
US-2023202905-A1 · Jun 29, 2023 · US
Transparent, near infrared-shielding glass ceramic
US-11629091-B2 · Apr 18, 2023 · US
Transparent, near infrared-shielding glass ceramic
US-2022089472-A1 · Mar 24, 2022 · US
Crystallized glass of three-dimensional shape, chemically strengthened glass of three-dimensional shape, and method for producing crystallized glass of three-dimensional shape and chemically strengthened glass of three-dimensional shape
US-2022064054-A1 · Mar 3, 2022 · US
Transparent, near infrared-shielding glass ceramic
US-11214511-B2 · Jan 4, 2022 · US
Lithium silicate glass ceramic
US-11117829-B2 · Sep 14, 2021 · US
Miserite crystallized glass for artificial tooth and method for coloring same
US-10913679-B2 · Feb 9, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C03C4/0028?
- CPC C03C4/0028 is the Cooperative Patent Classification code for “for crystal glass, e.g. lead-free crystal glass.”
- How many patents are filed under CPC C03C4/0028 (for crystal glass, e.g. lead-free crystal glass)?
- Our database includes 44 publications tagged with this CPC code.
- Is patent activity under CPC C03C4/0028 growing?
- Publication counts under this code: 1 in 2024 vs 3 in 2025 (latest complete years).