Machine arrangement for sequential processing of sheet-type substrates
US-2019381788-A1 · Dec 19, 2019 · US
Trial frames; Sets of lenses for use therewith
Trial frames; Sets of lenses for use therewith · Cooperative Patent Classification (CPC)
Agriculture, food, personal care, health, and life sciences.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | A61B3/04 |
| Official title | Trial frames; Sets of lenses for use therewith |
| Display label | Trial frames; Sets of lenses for use therewith |
| Total patents | 144 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 9 |
| 2016 | 10 |
| 2017 | 8 |
| 2018 | 15 |
| 2019 | 19 |
| 2020 | 13 |
| 2021 | 12 |
| 2022 | 17 |
| 2023 | 11 |
| 2024 | 8 |
| 2025 | 16 |
| 2026 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Optometry apparatus, assembly and system comprising such an apparatus
US-10492677-B2 · Dec 3, 2019 · US
System and method for vision testing
US-10463250-B1 · Nov 5, 2019 · US
Apparatus for assisting in establishing a correction for correcting heterotropia or heterophoria and method of operating a computer for assisting in establishing a correction for correcting heterotropia or heterophoria
US-10405742-B2 · Sep 10, 2019 · US
Method for determining a dioptric parameter of an ophthalmic lens to be provided to a person
US-2019261848-A1 · Aug 29, 2019 · US
Subjective refraction apparatus
US-2019246894-A1 · Aug 15, 2019 · US
Method and device for checking refractive power distribution and centering
US-10379387-B2 · Aug 13, 2019 · US
Systems and methods for improved ease and accuracy of gaze tracking
US-10376139-B2 · Aug 13, 2019 · US
Apparatus for assisting in establishing a correction for correcting heterotropia or heterophoria and method of operating a computer for assisting in establishing a correction for correcting heterotropia or heterophoria
US-2019209005-A1 · Jul 11, 2019 · US
Method and system for determining the subjective refraction properties of an eye
US-10327630-B2 · Jun 25, 2019 · US
Eyeglasses-matching tool
US-2019164200-A1 · May 30, 2019 · US
Display device for demonstrating optical properties of eyeglasses
US-10292581-B2 · May 21, 2019 · US
Corrective eyeglasses and method for subjective refraction by a wearer of said eyeglasses
US-10278573-B2 · May 7, 2019 · US
Systems for determining eye refraction
US-2019125181-A1 · May 2, 2019 · US
Machine arrangement and method for sequential processing of sheet-type substrates
US-10259211-B2 · Apr 16, 2019 · US
Miniaturised instrument for simulating simultaneous vision by generating masks
US-10213358-B2 · Feb 26, 2019 · US
Subjective optometry apparatus
US-10188282-B2 · Jan 29, 2019 · US
Systems for determining eye refraction
US-10182717-B2 · Jan 22, 2019 · US
Machine arrangement and method for sequential processing of sheet-type substrates
US-2018338677-A1 · Nov 29, 2018 · US
Trial frame and method for measuring key parameter thereof
US-10130252-B2 · Nov 20, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC A61B3/04?
- CPC A61B3/04 is the Cooperative Patent Classification code for “Trial frames; Sets of lenses for use therewith.”
- How many patents are filed under CPC A61B3/04 (Trial frames; Sets of lenses for use therewith)?
- Our database includes 144 publications tagged with this CPC code.
- Is patent activity under CPC A61B3/04 growing?
- Publication counts under this code: 8 in 2024 vs 16 in 2025 (latest complete years).