PlainPatent

CPC technology class · C08

C08L - Compositions Of Macromolecular Compounds

Compositions of macromolecular compounds. 36,183 US utility patents granted 2015–2025, with the leading assignees and year-by-year grant trajectory.

36,183
US patents granted
#1/8
in C08
25.0%
C08 class share
+9%
5-yr velocity

The verdict

According to USPTO PatentsView, Compositions Of Macromolecular Compounds ranks #46 of 670 CPC technology areas - 36,183 US patents granted since 2015, with recorded grant volume up 9% over five years.

#46
of 670 CPC technology areas
36,183
US patents granted, 2015–2025
Lg Chem
leading assignee (1,120)
+9%
grant velocity, last 5 yrs

How C08L's grant cadence moved

Between 2020–2024, C08L recorded 16,375 grants versus 15,051 in 2015–2019 (+9% equal-window velocity). Across complete years, output peaked in 2020 at 3,727 grants and bottomed in 2015 at 2,835 (+31% peak-over-trough). Lead assignee LG Chem, Ltd. holds 3.1% of the class ; the top three share 6.9%.

Leaderboard read

C08L concentration, lead at 3.1%

LG Chem, Ltd. leads this historical grant record at 3.1% of C08L - foreign corporation assignees hold 67% of class grants (18,248 of 27,114). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share
3.1%

1,120 of 36,183 grants

Top three share
6.9%

of the class's recorded grants

Lead over #2
234

more grants than DOW Global Technologies LLC

Where C08L sits inside C08

Among 8 subclasses in C08 (Organic Macromolecular COMPOUNDS; Their Preparation OR Chemical WORKING-UP; Compositions Based Thereon), C08L ranks #1 and holds 25.0% of the parent class's 144,472 recorded grants. Sibling chips below are the other subclasses in the same parent class, not the nationwide volume/lead-share peers further down.

C08G 29,133 C08K 28,505 C08F 23,159 C08J 21,338 C08B 3,742 C08C 1,240 C08H 1,172

Rising assignees active in C08L

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 Resonac Corporation 192x 0 → 192 company-wide · 50 in C08L
  2. #2 Topgolf Callaway Brands Corp. 144x 0 → 144 company-wide · 10 in C08L
  3. #3 Totalenergies Onetech 65x 0 → 65 company-wide · 6 in C08L
  4. #4 Bmic LLC 35x 5 → 176 company-wide · 29 in C08L
  5. #5 SK Geo Centric Co., Ltd. 35x 0 → 35 company-wide · 11 in C08L

C08L grants by year, peak 2020 (3,727)

US utility-patent grants per year in C08L, 2015–2025 - recent five years are up 9% versus 2015–2019.

2,0002,5003,0003,5004,000 20152016201720182019202020212022202320242025 2,178

Who leads C08L?

The 12 most active assignees in Compositions OF Macromolecular Compounds - wider bars mean more grants

patents

What this shows Lg Chem is the most active filer in C08L, holding 1,120 of the 36,183 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 C08L
Rank Company Patents in C08L
#1 LG Chem, Ltd. 1,120
#2 DOW Global Technologies LLC 886
#3 Basf SE 476
#4 3M Innovative Properties Company 475
#5 Shin-etsu Chemical Co., Ltd. 469
#6 Sabic Global Technologies B.V. 431
#7 Borealis AG 421
#8 Bridgestone Corporation 372
#9 Sumitomo Rubber Industries, Ltd. 350
#10 ExxonMobil Chemical Patents Inc. 311
#11 Zeon Corporation 304
#12 Toray Industries, Inc. 280
#13 Mitsubishi Gas Chemical Company, Inc. 261
#14 Rohm and Haas Company 254
#15 Compagnie Generale DES Etablissements Michelin 243
#16 Sumitomo Chemical Company, Limited 240
#17 Mitsubishi Chemical Corporation 239
#18 Dow Silicones Corporation 226
#19 Arkema France 224
#20 Kuraray Co., Ltd. 218

Footprint here vs. claim strategy

Each dot is a leading C08L 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 C08L assignees by class footprint. Bubble size = patents in C08L. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 510152025 20040060080010001200 Patents in C08L Avg claims / patent (company-wide) Lg ChemDow GlobalBasf Se3m Innovative…Shin-etsu ChemicalSabic Global B VBorealisBridgestoneSumitomo Rubber…Exxonmobil Chemical…ZeonToray IndustriesMitsubishi Gas…Rohm and Haas
Top 14 C08L assignees by class footprint. Bubble size = patents in C08L. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Classes near C08L's 36,183-grant footprint

Nationwide nearest neighbors for C08L (#46 of 670 by volume ; lead share 3.1%) - not the C08 parent-class siblings above.

Nearest by grant volume

B01J 35,809 H01R 35,523 G10L 35,471 G05D 37,264

Nearest by lead-assignee share

A47C 3.1% A47J 3.1% E01D 3.1% F21Y 3.1%

Questions about C08L

Which company holds the most patents in C08L?
LG Chem, Ltd. leads C08L with 1,120 patents (3.1% of the subclass). By PatentsView assignee type, foreign corporations account for 67% of class grants.
Which C08L assignees grew fastest recently?
Among assignees with ≥5 grants in C08L, Resonac Corporation shows the highest company-wide grant multiple (192x: 0 grants in 2019–2021 → 192 in 2022–2024) while holding 50 patents in this subclass. Growth is company-wide, not class-only.
How does C08L compare inside parent class C08?
Inside C08 (Organic Macromolecular COMPOUNDS; Their Preparation OR Chemical WORKING-UP; Compositions Based Thereon), C08L ranks #1 of 8 subclasses by grant volume and holds 25.0% of the parent class total. The largest sibling is C08G (29,133 grants).

What to do with this data

C08L in context - here's where to go next.

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

Methodology - C08L figures are USPTO PatentsView granted-utility totals for this subclass (36,183 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.