B29C 64/286
Optical filters
Official title: Optical filters, e.g. masks
B29C64/286 (Optical filters) appears on 194 US grants and 297 published applications in this corpus.
Search patents in B29C- Granted patents
- 194
- Published applications
- 297
- Assignees
- 148
- Inventors
- 526
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2012 | 0 | 3 |
| 2013 | 0 | 0 |
| 2014 | 2 | 1 |
| 2015 | 1 | 4 |
| 2016 | 1 | 9 |
| 2017 | 4 | 11 |
| 2018 | 9 | 14 |
| 2019 | 10 | 26 |
| 2020 | 11 | 21 |
| 2021 | 16 | 51 |
| 2022 | 35 | 53 |
| 2023 | 35 | 39 |
| 2024 | 41 | 23 |
| 2025 | 15 | 21 |
| 2026 | 14 | 21 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Apparatus, system and method of heat filtering for additive manufacturing22 Sep 2026US 12,741,413 B23D Print Innovations, LLC
- High speed light valve system22 Sep 2026US 12,741,418 B2Seurat Technologies, Inc.
- Methods including a combined light sheet and apparatuses11 Aug 2026US 12,703,149 B2Quadratic 3D, Inc.
- High speed light valve system4 Aug 2026US 12,697,773 B2Seurat Technologies, Inc.
- Methods of calibration of a stereolithography system9 Jun 2026US 12,649,284 B23D Systems, Inc.
- Additive production device and associated additive production method8 Oct 2026US 2026/0307327 A1EOS GmbH Electro Optical Systems
- An additive manufacturing apparatus24 Sep 2026US 2026/0284966 A1AXTRA3D Inc.
- Method and system for elongating voxel in multiphoton fabrication13 Aug 2026US 2026/0233465 A1Uab Vital3D Technologies
- Apparatus and method for making a stereolithographic object16 Jul 2026US 2026/0200171 A1
- Optical modeling apparatus and optical modeling method9 Jul 2026US 2026/0192521 A1Sony Group Corporation
Most cited
By later US patents
- Polyurethane resins having multiple mechanisms of hardening for use in producing three-dimensional objects271US 9,453,142 B2Carbon3D, Inc. · 2016
- Methods of producing three-dimensional objects from materials having multiple mechanisms of hardening165US 9,676,963 B2Carbon, Inc. · 2017
- Methods of producing polyurethane three-dimensional objects from materials having multiple mechanisms of hardening137US 9,598,606 B2Carbon, Inc. · 2017
- Phonon generation in bulk material for manufacturing120US 10,065,367 B2Chevron Phillips Chemical Company LP · 2018
- Polyurea resins having multiple mechanisms of hardening for use in producing three-dimensional objects74US 9,982,164 B2Carbon, Inc. · 2018