Ink jet primer applied on a corrugator
US-2025354027-A1 · Nov 20, 2025 · US
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Doctors
Doctors · Cooperative Patent Classification (CPC)
Textile and paper production, treatment, and products.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | D21G3/00 |
| Official title | Doctors |
| Display label | Doctors |
| Total patents | 20 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2016 | 6 |
| 2017 | 1 |
| 2018 | 1 |
| 2019 | 2 |
| 2020 | 1 |
| 2022 | 2 |
| 2023 | 2 |
| 2024 | 2 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Stud for a doctor blade holder in a fiber web machine and doctor blade assembly for a fiber web machine
US-12442136-B2 · Oct 14, 2025 · US
Scraper holder and scraping device
US-2025146221-A1 · May 8, 2025 · US
Set for Maintenance of a Doctor Blade in a Fiber Web Machine and Doctor Arrangement in a Fiber Web Machine
US-2024191432-A1 · Jun 13, 2024 · US
Stud for a Doctor Blade Holder in a Fiber Web Machine and Doctor Blade Assembly for a Fiber Web Machine
US-2024102244-A1 · Mar 28, 2024 · US
Elongated component for a manufacturing machine of a fibrous cellulosic web, its use and method for recycling
US-11814793-B2 · Nov 14, 2023 · US
Blowing equipment for doctor equipment of a fiber web machine and fiber web machine doctor equipment equipped with blowing equipment
US-11643780-B2 · May 9, 2023 · US
Elongated Component for a Manufacturing Machine of a Fibrous Cellulosic Web, Its Use and Method for Recycling
US-2022403596-A1 · Dec 22, 2022 · US
Blowing Equipment for Doctor Equipment of a Fiber Web Machine and Fiber Web Machine Doctor Equipment Equipped with Blowing Equipment
US-2022098795-A1 · Mar 31, 2022 · US
Method for early warning chatter detection and asset protection management
US-10604896-B2 · Mar 31, 2020 · US
Monitoring applicator rods and applicator rod nips
US-10370795-B2 · Aug 6, 2019 · US
Supporting mechanism for a papermaking machine dewatering blade
US-10246825-B2 · Apr 2, 2019 · US
Support Plate for a Doctor of a Fiber Web Machine and Doctor Assembly of a Fiber Web Machine and Method in a Doctor of a Fiber Web Machine
US-2018171557-A1 · Jun 21, 2018 · US
Monitoring oscillating components
US-9534970-B1 · Jan 3, 2017 · US
Monitoring oscillating components
US-2016363498-A1 · Dec 15, 2016 · US
Monitoring applicator rods and applicator rod nips
US-2016362840-A1 · Dec 15, 2016 · US
Method for early warning chatter detection and asset protection management
US-2016340830-A1 · Nov 24, 2016 · US
Method for early warning chatter detection and asset protection management
US-9404895-B2 · Aug 2, 2016 · US
Doctor Device For Fiber Web Machine And Doctor Arrangement In Fiber Web Machine
US-2016138223-A1 · May 19, 2016 · US
Doctor Apparatus and Blade Holder
US-2016070226-A1 · Mar 10, 2016 · US