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AmazonBank of ChinaChina Construction Bank

Technology portfolios compared in the same window and counting units. Scale is compared only within the same field or subclass.

Same window · published 2025-01-01 — 2025-12-31Some name or date coverage is incomplete; affected counts are lower bounds

This is a structural comparison of collected portfolios. The same requested window does not establish equal entity scope, covered months or industry; no competitive ranking is inferred.

Applicant-name coverage differs. The counts below cover only the listed names and do not represent complete company portfolios.

Amazon: Applicant names included in these statistics — AMAZON TECH INCReviewed names not covered — AMAZON TECHNOLOGIES INC · AMAZON TECHNOLOGIES INC. · AMAZON TECHNOLOGIES, INC · AMAZON TECHNOLOGIES, INC.

Bank of China: Applicant names included in these statistics — BANK OF CHINA CO LTD · BANK OF CHINA LTDReviewed names not covered — BANK OF CHINA LIMITED · 中国银行股份有限公司

China Construction Bank: Applicant names included in these statistics — CHINA CONSTRUCTION BANK CORPReviewed names not covered — CHINA CONSTRUCTION BANK CORPORATION · 中国建设银行股份有限公司

Amazon

Publications
2,095
Invention share
93%
Concentration
0.54
Green technology
—

Bank of China

Publications
138
Invention share
98%
Concentration
0.75
Green technology
—

China Construction Bank

Publications
1,106
Invention share
100%
Concentration
0.72
Green technology
—
0.89

Amazon × Bank of China

0.90

Amazon × China Construction Bank

1.00

Bank of China × China Construction Bank

Cosine similarity of application counts across 35 fields. 1 is identical, 0 is no overlap.

01Technology field mirror

The 12 fields with the largest combined share. Share shows structure; count shows scale.

Technology field mirror
Technology fieldAmazon / Bank of China / China Construction Bank
Computer technology
65.9%
74.6%
72.3%
IT methods for management
7.9%
42%
40.7%
Digital communication
29.5%
13.8%
17.9%
Audio-visual technology
7%
3.6%
0.2%
Control
5.2%
0%
0.5%
Handling
4.9%
0%
0%
Telecommunications
4%
0%
0.5%
Measurement
3.8%
0%
0%
Transport
3.5%
0%
0%
Electrical machinery, apparatus, energy
2%
0%
0%
Medical technology
0.7%
0%
0.4%
Mechanical elements
0.2%
0.7%
0%

Inspect one technology field

Inspect collected applications, portfolio share and supporting publications within one field. A technology overlap does not establish that companies in different industries are direct competitors.

One application may belong to multiple fields, so shares can sum to more than 100%. Drill-down lists publications; an application publication and its grant may appear separately.

02Same problem: shared IPC subclasses

The 10 subclasses in every company's top 60 with the most combined applications. Scale is compared within a subclass, never across different business scopes.

G06FData processing
Amazon912
Bank of China83
China Construction Bank764
G06QBusiness data processing
Amazon154
Bank of China58
China Construction Bank450
H04LDigital transmission
Amazon442
Bank of China19
China Construction Bank191
G06NComputing models, AI
Amazon257
Bank of China18
China Construction Bank118
G10LSpeech processing
Amazon275
Bank of China1
China Construction Bank4
G06VImage and video recognition
Amazon138
Bank of China18
China Construction Bank24
H04NPictorial communication, video
Amazon130
Bank of China3
China Construction Bank8
G06TImage processing
Amazon101
Bank of China7
China Construction Bank13
H04WWireless networks
Amazon114
Bank of China1
China Construction Bank5

03Where each one leans

Observed emphasis within each company’s collected top-60 IPC subclasses. A dash for another company means outside its top-60 list, not zero applications or a market gap. Incomplete coverage can also change the ordering.

Amazon

  • G10LSpeech processing
    Amazon
    275
    Bank of China
    1
    China Construction Bank
    4
  • H04WWireless networks
    Amazon
    114
    Bank of China
    1
    China Construction Bank
    5
  • H04LDigital transmission
    Amazon
    442
    Bank of China
    19
    China Construction Bank
    191
  • H04NPictorial communication, video
    Amazon
    130
    Bank of China
    3
    China Construction Bank
    8
  • B65GConveying, storage
    Amazon
    48
    Bank of China
    —
    China Construction Bank
    —
  • H04BTransmission
    Amazon
    40
    Bank of China
    —
    China Construction Bank
    —

Bank of China

  • G06VImage and video recognition
    Amazon
    138
    Bank of China
    18
    China Construction Bank
    24
  • G06QBusiness data processing
    Amazon
    154
    Bank of China
    58
    China Construction Bank
    450
  • F17D
    Amazon
    —
    Bank of China
    1
    China Construction Bank
    —
  • G06NComputing models, AI
    Amazon
    257
    Bank of China
    18
    China Construction Bank
    118
  • H05KPrinted circuits, assemblies
    Amazon
    20
    Bank of China
    2
    China Construction Bank
    —
  • G06TImage processing
    Amazon
    101
    Bank of China
    7
    China Construction Bank
    13

China Construction Bank

  • G06FData processing
    Amazon
    912
    Bank of China
    83
    China Construction Bank
    764
  • G07F
    Amazon
    —
    Bank of China
    —
    China Construction Bank
    1
  • G07G
    Amazon
    —
    Bank of China
    —
    China Construction Bank
    1
  • G16H
    Amazon
    6
    Bank of China
    —
    China Construction Bank
    4

04Publication rhythm

AmazonBank of ChinaChina Construction BankPublications per period
Publications per period
PeriodAmazonBank of ChinaChina Construction Bank
2025-01≥242 (partial coverage)≥19 (partial coverage)≥199 (partial coverage)
2025-02≥149 (partial coverage)≥65 (partial coverage)≥228 (partial coverage)
2025-03≥130 (partial coverage)≥51 (partial coverage)≥163 (partial coverage)
2025-04≥168 (partial coverage)Not collected≥52 (partial coverage)
2025-05≥186 (partial coverage)Not collected≥15 (partial coverage)
2025-06≥140 (partial coverage)Not collected≥16 (partial coverage)
2025-07≥223 (partial coverage)Not collected≥22 (partial coverage)
2025-08≥161 (partial coverage)Not collected≥16 (partial coverage)
2025-09≥195 (partial coverage)≥1 (partial coverage)≥10 (partial coverage)
2025-10≥201 (partial coverage)Not collected≥11 (partial coverage)
2025-11≥141 (partial coverage)Not collected≥67 (partial coverage)
2025-12≥159 (partial coverage)≥2 (partial coverage)≥307 (partial coverage)

Empty dashed outlines mark uncollected periods. Hatched bars and ≥ counts mark partial coverage.

Publication timing follows examination and publication cycles, not R&D intensity.

What makes it comparableThe same publication window and counting units. Companies with different windows are not put in one comparison.

What is not comparableGroup totals. Business and entity scopes differ; compare scale within a field or subclass.

Not a rankingSimilarity and shares describe structure, not patent value, quality or technical leadership.