Where does Nanjing DRUM Tower Hospital rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Nanjing DRUM Tower Hospital ranks #20,119 of 50,000 assignees by granted-patent volume, the same sort as the companies listing and top-holders ranking. See /methodology/#corpus-placement.

How many patents does Nanjing DRUM Tower Hospital hold?

Nanjing DRUM Tower Hospital holds 14 US utility patents granted between 2022 and 2025, spanning 14 technology areas.

What is Nanjing DRUM Tower Hospital's Innovation Score?

Nanjing DRUM Tower Hospital has an Innovation Score of 47.7 out of 100 (top 18% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Nanjing DRUM Tower Hospital focus on?

Nanjing DRUM Tower Hospital's top technology area is A61B (DIAGNOSIS; SURGERY; IDENTIFICATION) with 6 patents. Grants appear in 14 CPC subclasses total.

Is Nanjing DRUM Tower Hospital's patent grant rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for Nanjing DRUM Tower Hospital.

What does claim depth mean for Nanjing DRUM Tower Hospital's patents?

Nanjing DRUM Tower Hospital's patents average 8.6 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 Nanjing DRUM Tower Hospital 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

Nanjing DRUM Tower Hospital

USPTO PatentsView assignee record - 14 granted patents across 14 technology areas, recorded in grant years 2022–2025. 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: A61B (DIAGNOSIS; SURGERY; IDENTIFICATION).

Compiled by PlainPatent · May 15, 2026

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Nanjing ranks #20,119 of 50,000 tracked US assignees by granted-patent volume, with 14 patents across 14 technology areas.

#20,119
of 50,000 US assignees by volume: Top 18%
by Innovation Score (47.7/100): 8.6
avg claims per patent

USPTO PatentsView assignee plate

Corpus R20119 · Foreign Corporation #20,119 · 14 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-PAR · TYPE-FRNCORP · SPAN-YRS · BOOK-RICH

GRANTS-MICRO 14 grants
MID-PACK #20,119/50,000
PHOTO-FINISH Multi-Color
CPC-FOCUS A61B · 14 areas
INNOV-PAR 47.7/100
CLAIMS-PAR 8.6 claims/avg
TYPE-FRNCORP Foreign Corp
SPAN-YRS 2022–2025 · 4y
BOOK-RICH 9/10 fields

Nearest grant-volume peer: Multi-color Corporation (±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.

Qualcomm Incorporated · highest

85
Nanjing DRUM Tower H… · this assignee

48
3D Lighting Innovati… · lowest

7

What this shows Nanjing DRUM Tower Hospital stamps GRANTS-MICRO, MID-PACK, PHOTO-FINISH, CPC-FOCUS, INNOV-PAR, CLAIMS-PAR, TYPE-FRNCORP, SPAN-YRS, BOOK-RICH. Volume places it #20,119 of 50,000; Innovation Score 47.7/100 sits in the top 18% of the PatentsView-derived corpus. Closest grant-volume peer on this plate is Multi-color Corporation (±0 grants).

Portfolio overview

Nanjing DRUM Tower Hospital has been granted 14 US utility patents between 2022 and 2025, placing Nanjing DRUM Tower Hospital at #20,119 of 50,000 across all assignees tracked by PlainPatent. This portfolio spans 14 distinct Cooperative Patent Classification (CPC) subclasses, averaging 8.6 claims per patent with primary concentration in A61B (DIAGNOSIS; SURGERY; IDENTIFICATION). As a Foreign Corporation, Nanjing DRUM Tower Hospital is one of the more focused assignees in the PatentsView dataset. By volume, Nanjing sits between Multi-color Corporation (14 patents, rank #20,111) and Nantong T-SUN NEW Energy Co., Ltd. (14 patents, rank #20,119) - the closest US assignees by grant volume. The composite Innovation Score of 47.7/100 blends portfolio volume, grant velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.

Grant cadence records the difference between two grant-year windows. Historical data spans 2022 through 2025, with 14 total grants over that period. Grant timing can lag the related application by years, so this comparison does not establish current R&D spending, strategic intent, or a company’s application activity. The Foreign Corporation classification provides context for the assignee record, not a conclusion about its business strategy.

Claim depth and technology breadth describe this aggregate record. Nanjing DRUM Tower Hospital's 8.6 average claims per patent is an average count, not a measure of claim scope, legal strength, enforceability, or design-around risk. The record spans 14 CPC subclasses. Combined with portfolio volume, these figures let readers compare the documented grant records of assignees in similar technology classes.

Multi-color

14
Multiquip

14
NAC International

14
Nakamura-tome Pre…

14
Nanobacterie

14
Nanogrid

14
Nanowear

14
Nantong T-sun NEW…

14
Nanjing DRUM Towe… ◀

14

What this shows Nanjing holds 14 patents at rank #20,115, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Nanjing

By rank, the assignees closest to #20,115 in granted patent volume.

Leaders in A61B (Diagnosis)

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

Nanjing's Innovation Score vs. every tracked assignee

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

48 Top 18% higher than 82% of 50,000 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 · 2022–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2022–2019 baseline. Full figures in the table below.

View data table

Nanjing DRUM Tower Hospital patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2022	2	14.3%
2023	1	7.1%
2024	2	14.3%
2025partial year	9	64.3%

Which technologies does Nanjing DRUM Tower Hospital patent most?

A61B - DIAGNOSIS; SURGERY; IDENTIFICATION 6

A61M - DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY ; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY ; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR 3

C12M - APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS 2

A61N - ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY 2

Y02A - TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE 2

A61F - FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRS 2

H04R - LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS 1

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 1

B29C - SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING 1

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 1

A61P - SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS 1

C12N - MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA 1

C12Q - MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS ; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES 1

A61K - PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES 1

Top 14 of 14 technology areas

Where it ranks

Overall rank by patents

#20,119

of 50,000 tracked assignees

Innovation Score

47.7 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

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.