Optical apparatus and three-dimensional modeling apparatus
US-2024064275-A1 · Feb 22, 2024 · US
Optical filters, e.g. masks
Optical filters, e.g. masks · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B29C64/286 |
| Official title | Optical filters, e.g. masks |
| Display label | Optical filters, e.g. masks |
| Total patents | 399 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 5 |
| 2017 | 25 |
| 2018 | 17 |
| 2019 | 28 |
| 2020 | 31 |
| 2021 | 60 |
| 2022 | 69 |
| 2023 | 63 |
| 2024 | 57 |
| 2025 | 34 |
| 2026 | 9 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Additive manufacturing system and method
US-10518328-B2 · Dec 31, 2019 · US
Continuous Pull Three-Dimensional Printing
US-2019329494-A1 · Oct 31, 2019 · US
Spatter reduction laser scanning strategy in selective laser melting
US-10449632-B2 · Oct 22, 2019 · US
Linear light source using ultraviolet leds, and photopolymer 3d printer comprising linear light source
US-2019299531-A1 · Oct 3, 2019 · US
Methods and systems for measuring a pressure distribution between a surface of an object and a pressure sensitive surface during formation of the object
US-2019270242-A1 · Sep 5, 2019 · US
Heating techniques in additive fabrication and related systems and methods
US-2019263055-A1 · Aug 29, 2019 · US
Laser pulse shaping for additive manufacturing
US-10376987-B2 · Aug 13, 2019 · US
Apparatus for additively manufacturing three-dimensional objects
US-2019240907-A1 · Aug 8, 2019 · US
Methods of producing polyurethane three-dimensional objects from materials having multiple mechanisms of hardening
US-2019185703-A1 · Jun 20, 2019 · US
Mask video projection based stereolithography with continuous resin flow
US-10308007-B2 · Jun 4, 2019 · US
System and method for submicron additive manufacturing
US-2019126537-A1 · May 2, 2019 · US
Methods of producing EPOXY three-dimensional objects from materials having multiple mechanisms of hardening
US-10155882-B2 · Dec 18, 2018 · US
Three-dimensional printing systems and methods of their use
US-10144176-B1 · Dec 4, 2018 · US
Module for additive manufacturing apparatus and method
US-2018326485-A1 · Nov 15, 2018 · US
Additive manufacturing with irradiation filter
US-2018319082-A1 · Nov 8, 2018 · US
Method of making a medical device using additive manufacturing with a masking plate
US-2018303643-A1 · Oct 25, 2018 · US
Polyurethane resins having multiple mechanisms of hardening for use in producing three-dimensional objects
US-2018265738-A1 · Sep 20, 2018 · US
Phonon generation in bulk material for manufacturing
US-10065367-B2 · Sep 4, 2018 · US
Scanning UV light source utilizing semiconductor heterostructures
US-10056735-B1 · Aug 21, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B29C64/286?
- CPC B29C64/286 is the Cooperative Patent Classification code for “Optical filters, e.g. masks.”
- How many patents are filed under CPC B29C64/286 (Optical filters, e.g. masks)?
- Our database includes 399 publications tagged with this CPC code.
- Is patent activity under CPC B29C64/286 growing?
- Publication counts under this code: 57 in 2024 vs 34 in 2025 (latest complete years).