Where does Schaefer Kalk GmbH & Co. KG rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Schaefer Kalk GmbH & Co. KG ranks #42,826 of 49,997 assignees by granted-patent volume, the same sort as the companies listing and top-holders ranking. See /methodology/#corpus-placement.

How many patents does Schaefer Kalk GmbH & Co. KG hold?

Schaefer Kalk GmbH & Co. KG holds 6 US utility patents granted between 2017 and 2023, spanning 13 technology areas.

What is Schaefer Kalk GmbH & Co. KG's Innovation Score?

Schaefer Kalk GmbH & Co. KG has an Innovation Score of 51.7 out of 100 (top 11% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Schaefer Kalk GmbH & Co. KG's patent grant rate increasing or decreasing?

Schaefer Kalk GmbH & Co. KG's recent grant velocity is +400% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for Schaefer Kalk GmbH & Co. KG's patents?

Schaefer Kalk GmbH & Co. KG's patents average 20.3 claims each. This is an aggregate descriptive count from the grant record; it does not establish claim scope, legal strength, enforceability, or design-around risk.

How is the Schaefer Kalk GmbH & Co. KG patent data sourced?

All patent data comes from USPTO PatentsView, a public research dataset maintained by the United States Patent and Trademark Office covering US granted utility patents from 2015 to 2025.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Schaefer Kalk GmbH & Co. KG

Q: What technology areas does Schaefer Kalk GmbH & Co. KG focus on?

Schaefer Kalk GmbH & Co. KG's top technology area is C09C (Treatment OF Inorganic Materials, Other Than Fibrous Fillers, TO Enhance Their Pigmenting OR Filling Properties ; Preparation OF Carbon Black ; ; Preparation OF Inorganic Materials Which ARE NO Single Chemical Compounds AND Which ARE Mainly Used AS Pigments OR Fillers) with 6 patents, ranking #37 of 210 assignees active in that subclass. Grants appear in 13 CPC subclasses total.

USPTO PatentsView assignee record - 6 granted patents across 13 technology areas, recorded in grant years 2017–2023. Grant-trend analysis is cross-referenced to USPTO Patent Public Search; it does not measure application filings, current R&D, or legal strength. Primary class: C09C (Treatment OF Inorganic Materials, Other Than Fibrous Fillers, TO Enhance Their Pigmenting OR Filling Properties ; Preparation OF Carbon Black ; ; Preparation OF Inorganic Materials Which ARE NO Sing).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Schaefer ranks #42,826 of 49,997 tracked US assignees by granted-patent volume, with 6 patents across 13 technology areas.

#42,826
of 49,997 US assignees by volume: Top 11%
by Innovation Score (51.7/100): 20.3
avg claims per patent: +400%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R42826 · Foreign Corporation #42,826 · 6 grants

GRANTS-MICRO · LOWER-Q · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-DENSE · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

GRANTS-MICRO 6 grants
LOWER-Q #42,826/49,997
PHOTO-FINISH Scanlan International
CPC-FOCUS C09C · 13 areas
INNOV-PAR 51.7/100
CLAIMS-DENSE 20.3 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +400% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Scanlan International, Inc. (±0 grants)

Instrument codes from this assignee’s USPTO PatentsView grant sheet: volume band, corpus rank, photo-finish peer, lead CPC, Innovation Score, claim depth, assignee type, velocity, and book completeness. Not a USPTO rating of patent strength.

How Schaefer’s 51.7 Innovation Score adds up

The same four weighted components behind every Innovation Score on PlainPatent: portfolio volume, grant velocity, technology breadth, and claim depth.

Volume 6.7 pts (13%) Velocity 20.0 pts (39%) Breadth 12.7 pts (25%) Claim depth 12.2 pts (24%)

Qualcomm Incorporated · highest

85
Schaefer Kalk & KG · this assignee

52
3D Lighting… · lowest

7

What this shows Schaefer's Innovation Score is 51.7/100 (top 11% of the PatentsView-derived corpus). The chart places that score against the nearest Innovation Score peers plus corpus poles, not a reprint of the volume ranking.

Does more volume mean deeper claims for Schaefer?

Each dot is one of Schaefer’s 8 nearest volume peers (same corpus rank neighbourhood as the chart above), placed by total granted patents (horizontal) against average claims per patent (vertical). Schaefer’s own 20.3 claims/patent is ABOVE the 11.8 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

Schaefer vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView.

Where Schaefer's grants concentrate

Schaefer Kalk GmbH & Co. KG is a focused PatentsView assignee: 13 CPC subclasses with 100% of grants classified under C09C (Treatment OF Inorganic Materials, Other Than Fibrous Fillers, TO Enhance Their Pigmenting OR Filling Properties ; Preparation OF Carbon Black ; ; Preparation OF Inorganic Materials Which ARE NO Sing). Peak complete grant year is 2022 (2 grants) versus a trough of 1 in 2017. By volume, Schaefer sits between ScanMed, LLC and Schroff Technologies International, Inc..

Schaefer's three-year grant acceleration

Schaefer Kalk GmbH & Co. KG shows 4 grants in 2022–2024 against only 1 in 2019–2021. That prior window is too thin for a growth multiple (rename and spin-out assignees look artificially high when the baseline is near zero), so PlainPatent withholds a ranked acceleration claim here.

Scanmed

6
Scanlan Internati…

6
Scansonic MI

6
Scentlok

6
Scheppach Fabrika…

6
Scherdel Innotec…

6
Schiller Sports

6
Schroff Internati…

6
Schaefer Kalk & KG ◀

6

What this shows Schaefer holds 6 patents at rank #43,105, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Schaefer

By rank, the assignees closest to #43,105 in granted patent volume.

Leaders in C09C (Treatment OF Inorganic Materials)

Other assignees with the most granted patents in Schaefer's primary technology class.

Schaefer's Innovation Score vs. every tracked assignee

Composite of portfolio volume, grant velocity, technology breadth, and claim depth (0–100)

52 Top 11% higher than 89% of 49,997 US assignees

Each bar is a band; taller bars hold more US assignees. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source USPTO PatentsView, PlainPatent Innovation Score · 2015–2025

USPTO utility patent grants by year · 2017–2023

Grants by year

Teal-shaded recent years (2020–present) versus the 2017–2019 baseline. Full figures in the table below.

View data table

Schaefer Kalk GmbH & Co. KG patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2017	1	16.7%
2020	1	16.7%
2022	2	33.3%
2023	2	33.3%

Which technologies does Schaefer Kalk GmbH & Co. KG patent most?

C09C - Treatment OF Inorganic Materials, Other Than Fibrous Fillers, TO Enhance Their Pigmenting OR Filling Properties ; Preparation OF Carbon Black ; ; Preparation OF Inorganic Materials Which ARE NO Single Chemical Compounds AND Which ARE Mainly Used AS Pigments OR Fillers 6

C01P - Indexing Scheme Relating TO Structural AND Physical Aspects OF Solid Inorganic Compounds 5

C08J - WORKING-UP; General Processes OF COMPOUNDING; After-treatment NOT Covered BY Subclasses C08b, C08c, C08f, C08g or C08h 5

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 5

A61L - Methods OR Apparatus FOR Sterilising Materials OR Objects IN GENERAL; Disinfection, Sterilisation OR Deodorisation OF AIR; Chemical Aspects OF Bandages, Dressings, Absorbent Pads OR Surgical ARTICLES; Materials FOR Bandages, Dressings, Absorbent Pads OR Surgical Articles 3

Y10T - Technical Subjects Covered BY Former US Classification 2

B33Y - Additive Manufacturing, i.e. Manufacturing OF Three-dimensional [3-D] Objects BY Additive Deposition, Additive Agglomeration OR Additive Layering, e.g. BY 3-D Printing, Stereolithography OR Selective Laser Sintering 2

A61P - Specific Therapeutic Activity OF Chemical Compounds OR Medicinal Preparations 2

C01F - Compounds OF THE Metals Beryllium, Magnesium, Aluminium, Calcium, Strontium, Barium, Radium, Thorium, OR OF THE Rare-earth Metals 2

C08L - Compositions OF Macromolecular Compounds 2

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 1

B32B - Layered Products, i.e. Products Built-up OF Strata OF Flat OR Non-flat, e.g. Cellular OR Honeycomb, Form 1

C08G - Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds 1

Top 13 of 13 technology areas

More on this record

Data Source

USPTO PatentsView, US granted patents 2015–2025

View all rankings → How is Innovation Score calculated?

What to do with this data

Schaefer Kalk GmbH & Co. KG's patent record in context - here's where to go next.

Schaefer Kalk GmbH & Co. KG's lead technology class is C09C (Treatment OF Inorganic Materials, Other Than Fibrous Fillers, TO Enhance Their Pigmenting OR Filling Properties ; Preparation OF Carbon Black ; ; Preparation OF Inorganic Materials Which ARE NO Sing), 100% of its portfolio - see every assignee active in that class. Explore C09C
Ranked #42,826 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Schaefer Kalk GmbH & Co. KG against ScanMed, LLC, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 51.7/100 blends volume, velocity, technology breadth, and claim depth. How it's calculated

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

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the USPTO PatentsView database. Consult a qualified professional before making decisions based on this data.

Read our methodology - how this data is sourced, computed, and verified.

Data sources used on this page

USPTO PatentsView - the disambiguated bulk patent-grant, assignee, and CPC data this page's figures are derived from. patentsview.org
Cooperative Patent Classification (CPC) - the joint USPTO/EPO classification scheme used to group patents by technology area. cooperativepatentclassification.org
USPTO Patent Public Search - the official interface to verify the status of any individual patent. ppubs.uspto.gov

Compiled by PlainPatent , US Patent Intelligence Editorial Process · May 15, 2026

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. Data current as of May 2026.