CPC technology class · H05

H05F - Static Electricity

Static electricity; naturally-occurring electricity. 557 US utility patents granted 2015–2025, with the leading assignees and year-by-year grant trajectory.

Compiled by PlainPatent · May 15, 2026

557
US patents granted: #5/6
in H05: 0.5%
H05 class share: -16%
5-yr velocity

The verdict

According to USPTO PatentsView, Static Electricity ranks #530 of 670 CPC technology areas - 557 US patents granted since 2015, with recorded grant volume down 16% over five years.

#530
of 670 CPC technology areas: 557
US patents granted, 2015–2025: Murata Manufacturing
leading assignee (22): -16%
grant velocity, last 5 yrs

How H05F's grant cadence moved

Between 2020–2024, H05F recorded 223 grants versus 267 in 2015–2019 (-16% equal-window velocity). Across complete years, output peaked in 2017 at 57 grants and bottomed in 2024 at 39 (+46% peak-over-trough). Lead assignee Newpark Mats & Integrated Services LLC holds 1.4% of the class ; the top three share 3.6%.

Leaderboard read

H05F concentration, lead at 1.4%

Newpark Mats & Integrated Services LLC leads this historical grant record at 1.4% of H05F - foreign corporation assignees hold 57% of class grants (66 of 115). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share: 1.4%
Top three share: 3.6%
Lead over #2: 2

Where H05F sits inside H05

Among 6 subclasses in H05 (Electric Techniques NOT Otherwise Provided FOR), H05F ranks #5 and holds 0.5% of the parent class's 102,507 recorded grants. Sibling chips below are the other subclasses in the same parent class, not the nationwide volume/lead-share peers further down.

H05K 62,449 H05B 33,418 H05H 3,951 H05G 2,073 H05C 59

Rising assignees active in H05F

Company-wide grant multiples (2022–2024 vs 2019–2021) among assignees with ≥5 patents in this subclass. Growth is company-wide; class patent counts are subclass-specific.

#1 Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. 8.92x 12 → 107 company-wide · 5 in H05F
#2 Lightning Suppression Systems Co., Ltd. 6.00x 1 → 6 company-wide · 5 in H05F
#3 Earth Energies, Inc. 2.00x 2 → 4 company-wide · 6 in H05F
#4 Moxtek, Inc. 0.78x 50 → 39 company-wide · 6 in H05F
#5 Newpark Mats & Integrated Services LLC 0.67x 9 → 6 company-wide · 8 in H05F

H05F grants by year, peak 2017 (57)

US utility-patent grants per year in H05F, 2015–2025 - recent five years are down 16% versus 2015–2019.

Newpark Mats &…

8
Moxtek

6
Earth Energies

6
Yantai Jereh…

5
Hermes Microvision

5
Lightning Suppression…

5
Woodway Usa

4
Guill Tool &…

4
Tigo Energy

3
Hexcel Composites

3
Gema Switzerland

3
Titeflex

3

What this shows Murata Manufacturing is the most active filer in H05F, holding 22 of the 557 patents in this class. Concentration at the top signals how contestable this technology area is for new entrants.

View data table

Top patent holders in CPC subclass H05F
Rank	Company	Patents in H05F
#1	Newpark Mats & Integrated Services LLC	8
#2	Moxtek, Inc.	6
#3	Earth Energies, Inc.	6
#4	Yantai Jereh Petroleum Equipment & Technologies Co., Ltd.	5
#5	Hermes Microvision Inc.	5
#6	Lightning Suppression Systems Co., Ltd.	5
#7	Woodway USA, Inc.	4
#8	Guill Tool & Engineering Co., Inc.	4
#9	Tigo Energy, Inc.	3
#10	Hexcel Composites Limited	3
#11	Gema Switzerland GMBH	3
#12	Titeflex Corporation	3
#13	Condalign AS	3
#14	Solaero Technologies Corp.	2
#15	Koganei Corporation	2
#16	Cutsforth, Inc.	2
#17	National University Corporation, Iwate University	2
#18	Advanced Ion Beam Technology, Inc.	2
#19	CMD Corporation	2
#20	Conductive Composites Company IP, LLC	2

Footprint here vs. claim strategy

Each dot is a leading H05F assignee, placed by how many patents it holds in this class (horizontal) against its company-wide average claims per patent (vertical) - a read on whether the class is led by broad-but-shallow filers or focused deep-claim players.

Top 14 H05F assignees by class footprint. Bubble size = patents in H05F. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Classes near H05F's 557-grant footprint

Nationwide nearest neighbors for H05F (#530 of 670 by volume ; lead share 3.9%) - not the H05 parent-class siblings above.

Nearest by grant volume

B60M 559 B63J 559 B64B 560 A21B 546

Nearest by lead-assignee share

H04Q 4.0% F05C 4.0% A63C 3.9% F21K 3.9%

Questions about H05F

Which company holds the most patents in H05F?

Murata Manufacturing Co., Ltd. leads H05F with 22 patents (1.4% of the subclass). By PatentsView assignee type, foreign corporations account for 57% of class grants.

Which H05F assignees grew fastest recently?

Among assignees with ≥5 grants in H05F, Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. shows the highest company-wide grant multiple (8.92x: 12 grants in 2019–2021 → 107 in 2022–2024) while holding 5 patents in this subclass. Growth is company-wide, not class-only.

How does H05F compare inside parent class H05?

Inside H05 (Electric Techniques NOT Otherwise Provided FOR), H05F ranks #5 of 6 subclasses by grant volume and holds 0.5% of the parent class total. The largest sibling is H05K (62,449 grants).

What to do with this data

H05F in context - here's where to go next.

Newpark Mats & Integrated Services LLC leads H05F with 8 grants in this class. See full portfolio
H05F ranks #530 of 670 by grant volume among all tracked CPC technology areas. See the ranking
Inside parent class H05, the largest sibling subclass is H05K with 62,449 grants. Explore H05K

Figures reflect USPTO PatentsView grant data through 2026-05-15; pending applications not yet granted are not counted.

Methodology - H05F figures are USPTO PatentsView granted-utility totals for this subclass (557 grants in the tracked window).

Every figure on PlainPatent is rendered directly from USPTO source data, no number is typed in by an editor. This page draws directly on USPTO source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.