Sinopec Southwest OIL & GAS Company
USPTO PatentsView assignee record - 6 granted patents across 2 technology areas, recorded in grant years 2021–2025. 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: E21B (Earth OR Rock DRILLING; Obtaining OIL, GAS, Water, Soluble OR Meltable Materials OR A Slurry OF Minerals From Wells).
The verdict
According to USPTO PatentsView, Sinopec ranks #43,126 of 49,997 tracked US assignees by granted-patent volume, with 6 patents across 2 technology areas.
- #43,126
- of 49,997 US assignees by volume
- Top 36%
- by Innovation Score (40.4/100)
- 14.5
- avg claims per patent
USPTO PatentsView assignee plate
Corpus R43126 · Foreign Corporation #43,126 · 6 grants
GRANTS-MICRO · LOWER-Q · PHOTO-FINISH · CPC-NARROW · INNOV-PAR · CLAIMS-RICH · TYPE-FRNCORP · SPAN-YRS · BOOK-RICH
- GRANTS-MICRO 6 grants
- LOWER-Q #43,126/49,997
- PHOTO-FINISH Sino Canada Health…
- CPC-NARROW E21B · 2 areas
- INNOV-PAR 40.4/100
- CLAIMS-RICH 14.5 claims/avg
- TYPE-FRNCORP Foreign Corp
- SPAN-YRS 2021–2025 · 5y
- BOOK-RICH 9/10 fields
Nearest grant-volume peer: Sino Canada Health Engineering Research Institute (HEFEI) Ltd. (±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 Sinopec’s 40.4 Innovation Score adds up
The same four weighted components behind every Innovation Score on PlainPatent: portfolio volume, grant velocity, technology breadth, and claim depth.
Innovation-score neighbourhood around Sinopec
Lowest and highest poles plus nearest Innovation Score peers, not a full corpus board reprint.
- Qualcomm Incorporated · highest
Qualcomm Incorporated · highest
85 score
- Sinopec Southwest… · this assignee
Sinopec Southwest… · this assignee
40 score
- 3D Lighting… · lowest 7
3D Lighting… · lowest
7 score
What this shows Sinopec's Innovation Score is 40.4/100 (top 36% 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 Sinopec?
Each dot is one of Sinopec’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). Sinopec’s own 14.5 claims/patent is ABOVE the 13.0 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.
Where Sinopec's grants concentrate
Sinopec Southwest OIL & GAS Company is a focused PatentsView assignee: 2 CPC subclasses with 100% of grants classified under E21B (Earth OR Rock DRILLING; Obtaining OIL, GAS, Water, Soluble OR Meltable Materials OR A Slurry OF Minerals From Wells). Peak complete grant year is 2022 (2 grants) versus a trough of 1 in 2021. By volume, Sinopec sits between Sino Canada Health Engineering Research Institute (HEFEI) Ltd. and Siteone Therapeutics, Inc..
Sinopec's three-year grant acceleration
Sinopec Southwest OIL & GAS Company 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.
Who files at Sinopec's volume?
Granted US patents 2015–2025 versus its nearest-ranked assignees by volume, this company marked ◀
- Sino Canada Healt…
Sino Canada Health Engineering Research Institute (HEFEI) Ltd.
6 patents
- Sinopec Dalian Re…
Sinopec Dalian Research Institute OF Petroleum AND Petrochemicals Co., Ltd.
6 patents
- Sinopec Petroleum…
Sinopec Petroleum Engineering Technology Research Institute Co., Ltd.
6 patents
- Sinopec Petroleum…
Sinopec Petroleum Engineering Technology Service Co., Ltd
6 patents
- Sintratec
Sintratec AG
6 patents
- Sipra Patententwi…
Sipra Patententwicklungs- und Beteiligungsgesellschaft mbH
6 patents
- Sirman S P A
Sirman S.P.A.
6 patents
- Siteone Therapeut…
Siteone Therapeutics, Inc.
6 patents
- Sinopec Southwest… ◀
Sinopec Southwest OIL & GAS Company
6 patents
What this shows Sinopec holds 6 patents at rank #42,907, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.
Companies ranked near Sinopec
By rank, the assignees closest to #42,907 in granted patent volume.
- Sino Canada Health Engineering Research Institute (HEFEI) Ltd. #42,903 · 6 patents
- Sinopec Dalian Research Institute OF Petroleum AND Petrochemicals Co., Ltd. #42,904 · 6 patents
- Sinopec Petroleum Engineering Technology Research Institute Co., Ltd. #42,905 · 6 patents
- Sinopec Petroleum Engineering Technology Service Co., Ltd #42,906 · 6 patents
- Sintratec AG #42,908 · 6 patents
- Sipra Patententwicklungs- und Beteiligungsgesellschaft mbH #42,909 · 6 patents
- Sirman S.P.A. #42,910 · 6 patents
- Siteone Therapeutics, Inc. #42,911 · 6 patents
Leaders in E21B (Earth OR Rock Drilling)
Other assignees with the most granted patents in Sinopec's primary technology class.
- Halliburton Energy Services, Inc. 6,516 in class
- Schlumberger Technology Corporation 3,244 in class
- Saudi Arabian OIL Company 3,064 in class
- Baker Hughes Holdings LLC 1,273 in class
- Baker Hughes, a GE company, LLC 1,107 in class
- Weatherford Technology Holdings, LLC 829 in class
- Baker Hughes Oilfield Operations LLC 598 in class
- Cameron International Corporation 514 in class
Sinopec's Innovation Score vs. every tracked assignee
Composite of portfolio volume, grant velocity, technology breadth, and claim depth (0–100)
40 Top 36% higher than 64% 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
Grants by year
Teal-shaded recent years (2020–present) versus the 2021–2019 baseline. Full figures in the table below.
View data table
| Year | Patents Granted | Share of Period |
|---|---|---|
| 2021 | 1 | 16.7% |
| 2022 | 2 | 33.3% |
| 2024 | 2 | 33.3% |
| 2025partial year | 1 | 16.7% |
Which technologies does Sinopec Southwest OIL & GAS Company patent most?
Top 2 of 2 technology areas
Data Source
USPTO PatentsView, US granted patents 2015–2025
What to do with this data
Sinopec Southwest OIL & GAS Company's patent record in context - here's where to go next.
- Sinopec Southwest OIL & GAS Company's lead technology class is E21B (Earth OR Rock DRILLING; Obtaining OIL, GAS, Water, Soluble OR Meltable Materials OR A Slurry OF Minerals From Wells), 100% of its portfolio - see every assignee active in that class. Explore E21B
- Ranked #43,126 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
- Compare Sinopec Southwest OIL & GAS Company against Sino Canada Health Engineering Research Institute (HEFEI) Ltd., an assignee filing at a similar volume. Compare portfolios
- Innovation Score of 40.4/100 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.
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.