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CPC technology class · C07

C07G - Compounds Of Unknown Constitution

Compounds of unknown constitution. 358 US utility patents granted 2015–2025, with the leading assignees and year-by-year grant trajectory.

358
US patents granted
#8/8
in C07
0.2%
C07 class share
-26%
5-yr velocity

The verdict

According to USPTO PatentsView, Compounds Of Unknown Constitution ranks #572 of 670 CPC technology areas - 358 US patents granted since 2015, with recorded grant volume down 26% over five years.

#572
of 670 CPC technology areas
358
US patents granted, 2015–2025
Upm-kymmene
leading assignee (22)
-26%
grant velocity, last 5 yrs

How C07G's grant cadence moved

Between 2020–2024, C07G recorded 130 grants versus 176 in 2015–2019 (-26% equal-window velocity). Across complete years, output peaked in 2018 at 44 grants and bottomed in 2023 at 21 (+110% peak-over-trough). Lead assignee Upm-kymmene Corporation holds 6.1% of the class ; the top three share 12.6%.

Leaderboard read

C07G concentration, lead at 6.1%

Upm-kymmene Corporation leads this historical grant record at 6.1% of C07G - foreign corporation assignees hold 62% of class grants (80 of 129). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share
6.1%

22 of 358 grants

Top three share
12.6%

of the class's recorded grants

Lead over #2
10

more grants than Virdia, LLC

Where C07G sits inside C07

Among 8 subclasses in C07 (Organic Chemistry), C07G ranks #8 and holds 0.2% of the parent class's 176,064 recorded grants. Sibling chips below are the other subclasses in the same parent class, not the nationwide volume/lead-share peers further down.

C07K 58,046 C07D 54,914 C07C 32,521 C07F 14,249 C07B 8,058 C07H 6,464 C07J 1,454

Rising assignees active in C07G

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. #1 FPInnovations 2.00x 4 → 8 company-wide · 6 in C07G
  2. #2 Upm-kymmene Corporation 0.67x 52 → 35 company-wide · 22 in C07G
  3. #3 Virdia, LLC 0.36x 11 → 4 company-wide · 12 in C07G
  4. #4 Renmatix, Inc. 0.36x 11 → 4 company-wide · 11 in C07G
  5. #5 REN Fuel K2B AB 0.33x 3 → 1 company-wide · 6 in C07G

C07G grants by year, peak 2018 (44)

US utility-patent grants per year in C07G, 2015–2025 - recent five years are down 26% versus 2015–2019.

1020304050 20152016201720182019202020212022202320242025 26

Who leads C07G?

The 12 most active assignees in Compounds OF Unknown Constitution - wider bars mean more grants

patents

What this shows Upm-kymmene is the most active filer in C07G, holding 22 of the 358 patents in this class. Concentration at the top signals how contestable this technology area is for new entrants.

Source USPTO PatentsView, granted utility patents As of 2015–2025 grant years
View data table
Top patent holders in CPC subclass C07G
Rank Company Patents in C07G
#1 Upm-kymmene Corporation 22
#2 Virdia, LLC 12
#3 Renmatix, Inc. 11
#4 Fibria Innovations Inc. 9
#5 FPInnovations 6
#6 REN Fuel K2B AB 6
#7 API Intellectual Property Holdings, LLC 5
#8 Valmet AB 4
#9 ZaiNar, Inc. 4
#10 Granbio Intellectual Property Holdings, LLC 4
#11 Annikki GMBH 4
#12 Flotek Chemistry, LLC 3
#13 Rockwool A/S 3
#14 Compagnie Industrielle de la Matiere Vegetale—CIMV 3
#15 Cmblu Energy AG 3
#16 Green Extraction Technologies 3
#17 Chevron Oronite Company LLC 2
#18 Ip2ipo Innovations Limited 2
#19 GrafTech International Holdings Inc. 2
#20 Deinove 2

Footprint here vs. claim strategy

Each dot is a leading C07G 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 C07G assignees by class footprint. Bubble size = patents in C07G. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 10152025 0510152025 Patents in C07G Avg claims / patent (company-wide) Upm-kymmeneVirdiaRenmatixFibria InnovationsFpinnovationsRen Fuel K2b AbApi Intellectual…Valmet AbZainarGranbio Intellectual…AnnikkiFlotek ChemistryRockwool A/SCompagnie Industrielle…
Top 14 C07G assignees by class footprint. Bubble size = patents in C07G. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Questions about C07G

Which company holds the most patents in C07G?
Upm-kymmene Corporation leads C07G with 22 patents (6.1% of the subclass). By PatentsView assignee type, foreign corporations account for 62% of class grants.
Which C07G assignees grew fastest recently?
Among assignees with ≥5 grants in C07G, FPInnovations shows the highest company-wide grant multiple (2.00x: 4 grants in 2019–2021 → 8 in 2022–2024) while holding 6 patents in this subclass. Growth is company-wide, not class-only.
How does C07G compare inside parent class C07?
Inside C07 (Organic Chemistry), C07G ranks #8 of 8 subclasses by grant volume and holds 0.2% of the parent class total. The largest sibling is C07K (58,046 grants).

What to do with this data

C07G in context - here's where to go next.

  • Upm-kymmene Corporation leads C07G with 22 grants in this class. See full portfolio
  • C07G ranks #572 of 670 by grant volume among all tracked CPC technology areas. See the ranking
  • Inside parent class C07, the largest sibling subclass is C07K with 58,046 grants. Explore C07K

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

Methodology - C07G figures are USPTO PatentsView granted-utility totals for this subclass (358 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.