Rotary machine and method for the heat exchange in a rotary machine
US-2016348687-A1 · Dec 1, 2016 · US
for submerged use
for submerged use · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F04D13/08 |
| Official title | for submerged use |
| Display label | for submerged use |
| Total patents | 507 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 36 |
| 2016 | 35 |
| 2017 | 36 |
| 2018 | 35 |
| 2019 | 77 |
| 2020 | 47 |
| 2021 | 44 |
| 2022 | 32 |
| 2023 | 47 |
| 2024 | 62 |
| 2025 | 51 |
| 2026 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Adjustable flow overflow vortex transfer system
US-2016346836-A1 · Dec 1, 2016 · US
Water pump
US-9488177-B2 · Nov 8, 2016 · US
Pump station
US-9476189-B2 · Oct 25, 2016 · US
Apparatus for monitoring an electrical submersible pump
US-9476425-B2 · Oct 25, 2016 · US
Bottom draw pump
US-2016265536-A1 · Sep 15, 2016 · US
Electric submersible pump with reduced vibration
US-2016222984-A1 · Aug 4, 2016 · US
Cooling devices and methods for use with electric submersible pumps
US-9394917-B2 · Jul 19, 2016 · US
Micropump structure
US-9388811-B2 · Jul 12, 2016 · US
Fracture-resistant self-lubricating wear surfaces
US-2016177959-A1 · Jun 23, 2016 · US
Aquaculture Pump System and Method
US-2016174531-A1 · Jun 23, 2016 · US
Compliant abrasion resistant bearings for a submersible well pump
US-9353752-B2 · May 31, 2016 · US
Washer pump apparatus for vehicle provided with improved water-proof structure
US-2016146225-A1 · May 26, 2016 · US
Threaded Connection with Engaging Lugs for Electrical Submersible Pump
US-2016138613-A1 · May 19, 2016 · US
Water pump motor, and water pump using same
US-9318931-B2 · Apr 19, 2016 · US
Vortex prevention device and double suction vertical pump having such vortex prevention device
US-9297385-B2 · Mar 29, 2016 · US
Gas Lock Resolution During Operation Of An Electric Submersible Pump
US-2016084254-A1 · Mar 24, 2016 · US
Systems and Methods for Splicing Electrical Conductors in an ESP Motor
US-2016087502-A1 · Mar 24, 2016 · US
Compact liquid nitrogen pump
US-2016061384-A1 · Mar 3, 2016 · US
Shim Free Pothead Housing Connection to Motor of Electrical Submersible Well Pump
US-2016047383-A1 · Feb 18, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04D13/08?
- CPC F04D13/08 is the Cooperative Patent Classification code for “for submerged use.”
- How many patents are filed under CPC F04D13/08 (for submerged use)?
- Our database includes 507 publications tagged with this CPC code.
- Is patent activity under CPC F04D13/08 growing?
- Publication counts under this code: 62 in 2024 vs 51 in 2025 (latest complete years).