Where does Liburdi Engineering Limited rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Liburdi Engineering Limited ranks #26,745 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 Liburdi Engineering Limited hold?

Liburdi Engineering Limited holds 10 US utility patents granted between 2016 and 2022, spanning 13 technology areas.

What is Liburdi Engineering Limited's Innovation Score?

Liburdi Engineering Limited has an Innovation Score of 30.6 out of 100 (35th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Liburdi Engineering Limited's patent grant rate increasing or decreasing?

Liburdi Engineering Limited's recent grant velocity is +0% compared to the prior five-year period (grant years, not application filing dates). The company is maintaining or growing its granted-patent output.

What does claim depth mean for Liburdi Engineering Limited's patents?

Liburdi Engineering Limited's patents average 12.2 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 Liburdi Engineering Limited 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

Liburdi Engineering Limited

Q: What technology areas does Liburdi Engineering Limited focus on?

Liburdi Engineering Limited's top technology area is B23K (Soldering OR UNSOLDERING; WELDING; Cladding OR Plating BY Soldering OR WELDING; Cutting BY Applying Heat Locally, e.g. Flame CUTTING; Working BY Laser Beam) with 8 patents, ranking #248 of 1,623 assignees active in that subclass. Grants appear in 13 CPC subclasses total.

USPTO PatentsView assignee record - 10 granted patents across 13 technology areas, recorded in grant years 2016–2022. 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: B23K (Soldering OR UNSOLDERING; WELDING; Cladding OR Plating BY Soldering OR WELDING; Cutting BY Applying Heat Locally, e.g. Flame CUTTING; Working BY Laser Beam).

Compiled by PlainPatent · May 15, 2026

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Liburdi ranks #26,745 of 49,997 tracked US assignees by granted-patent volume, with 10 patents across 13 technology areas.

#26,745
of 49,997 US assignees by volume: 35th percentile
by Innovation Score (30.6/100): 12.2
avg claims per patent: +0%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R26745 · Foreign Corporation #26,745 · 10 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-RICH · TYPE-FRNCORP · VEL-FLAT · BOOK-FULL

GRANTS-MICRO 10 grants
MID-PACK #26,745/49,997
PHOTO-FINISH Lenox
CPC-FOCUS B23K · 13 areas
INNOV-THIN 30.6/100
CLAIMS-RICH 12.2 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-FLAT +0% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Lenox 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.

How Liburdi’s 30.6 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 8.3 pts (27%) Velocity 2.2 pts (7%) Breadth 12.7 pts (42%) Claim depth 7.3 pts (24%)

Qualcomm Incorporated · highest

85
SpotOn Transact · near

31
3D Medical · near

31
Cadillac Products… · near

31
Kind Consumer · near

31
Liburdi Engineering · this assignee

31
3D Lighting… · lowest

7

What this shows Liburdi's Innovation Score is 30.6/100 (35th percentile 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 Liburdi?

Each dot is one of Liburdi’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). Liburdi’s own 12.2 claims/patent is at or below the 13.0 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Liburdi's grants concentrate

Liburdi Engineering Limited is a focused PatentsView assignee: 13 CPC subclasses with 80% of grants classified under B23K (Soldering OR UNSOLDERING; WELDING; Cladding OR Plating BY Soldering OR WELDING; Cutting BY Applying Heat Locally, e.g. Flame CUTTING; Working BY Laser Beam). Peak complete grant year is 2019 (3 grants) versus a trough of 1 in 2016. By volume, Liburdi sits between Lenox Corporation and Littelfuse Semiconductor (Wuxi) Co., Ltd..

Liburdi's three-year grant acceleration

Liburdi Engineering Limited shows 2 grants in 2022–2024 against only 6 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.

Lenox

10
Leonardi Manufact…

10
Levolor

10
Liberty Ollfield…

10
Licella Pty

10
Lightwaves Systems

10
Linktel

10
Littelfuse Semico…

10
Liburdi Engineeri… ◀

10

What this shows Liburdi holds 10 patents at rank #26,758, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Liburdi

By rank, the assignees closest to #26,758 in granted patent volume.

Leaders in B23K (Soldering OR Unsoldering)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Liburdi, neither rank-band nor same-CPC leaders (those blocks stay above). In B23K (Soldering OR Unsoldering), Liburdi ranks #248 of 1,623 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (31 here).

3D Medical 31 Cadillac Products Automotive Company 31 Kind Consumer Limited 31 SpotOn Transact, LLC 31

Liburdi's Innovation Score vs. every tracked assignee

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

31 35th percentile higher than 35% 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 · 2016–2022

Grants by year

Teal-shaded recent years (2020–present) versus the 2016–2019 baseline. Full figures in the table below.

View data table

Liburdi Engineering Limited patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2016	1	10.0%
2018	1	10.0%
2019	3	30.0%
2020	2	20.0%
2021	1	10.0%
2022	2	20.0%

Which technologies does Liburdi Engineering Limited patent most?

B23K - Soldering OR UNSOLDERING; WELDING; Cladding OR Plating BY Soldering OR WELDING; Cutting BY Applying Heat Locally, e.g. Flame CUTTING; Working BY Laser Beam 8

C22C - Alloys 6

C22F - Changing THE Physical Structure OF Non-ferrous Metals AND Non-ferrous Alloys 5

F01D - Non-positive Displacement Machines OR Engines, e.g. Steam Turbines 2

F05D - Indexing Scheme FOR Aspects Relating TO Non-positive-displacement Machines OR Engines, Gas-turbines OR Jet-propulsion Plants 2

C23C - Coating Metallic MATERIAL; Coating Material With Metallic MATERIAL; Surface Treatment OF Metallic Material BY Diffusion Into THE Surface, BY Chemical Conversion OR SUBSTITUTION; Coating BY Vacuum Evaporation, BY Sputtering, BY ION Implantation OR BY Chemical Vapour Deposition, IN General 2

B23P - Metal-working NOT Otherwise Provided FOR; Combined OPERATIONS; Universal Machine Tools 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

B22F - Working Metallic POWDER; Manufacture OF Articles From Metallic POWDER; Making Metallic Powder ; Apparatus OR Devices Specially Adapted FOR Metallic Powder 2

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 2

B05D - Processes FOR Applying Fluent Materials TO Surfaces, IN General 1

B21C - Manufacture OF Metal Sheets, Wire, Rods, Tubes, Profiles OR Like Semi-manufactured Products Otherwise Than BY ROLLING; Auxiliary Operations Used IN Connection With Metal-working Without Essentially Removing Material 1

B22D - Casting OF METALS; Casting OF Other Substances BY THE Same Processes OR Devices 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

Liburdi Engineering Limited's patent record in context - here's where to go next.

Liburdi Engineering Limited's lead technology class is B23K (Soldering OR UNSOLDERING; WELDING; Cladding OR Plating BY Soldering OR WELDING; Cutting BY Applying Heat Locally, e.g. Flame CUTTING; Working BY Laser Beam), 80% of its portfolio - see every assignee active in that class. Explore B23K
Ranked #26,745 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Liburdi Engineering Limited against Lenox Corporation, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 30.6/100 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.