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AmazonAppleCXMT

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.

Apple: Applicant names included in these statistics — APPLE INCReviewed names not covered — APPLE COMPUTER INC · APPLE COMPUTER, INC. · APPLE INC. · APPLE, INC.

CXMT: Applicant names included in these statistics — CHANGXIN MEMORY TECH INC · CHANGXIN MEMORY TECHNOLOGIES INC · CHANGXIN TECH GROUP CO LTD · CXMT CORPReviewed names not covered — CHANGXIN MEMORY TECHNOLOGIES, INC. · CXMT CORPORATION · 睿力集成电路有限公司 · 长鑫存储技术有限公司 · 长鑫科技集团股份有限公司

Amazon

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

Apple

Publications
12,360
Invention share
87%
Concentration
0.38
Green technology
—

CXMT

Publications
1,570
Invention share
98%
Concentration
0.58
Green technology
—
0.89

Amazon × Apple

0.41

Amazon × CXMT

0.34

Apple × CXMT

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 / Apple / CXMT
Computer technology
65.9%
39.1%
33.6%
Digital communication
29.5%
42.1%
0.5%
Semiconductors
0.3%
3%
67.9%
Audio-visual technology
7%
14.2%
0.5%
Telecommunications
4%
13.9%
0.1%
Measurement
3.8%
5.7%
2.3%
IT methods for management
7.9%
2.4%
0%
Optics
0.9%
7.2%
2.2%
Control
5.2%
1.9%
1.4%
Basic communication processes
0.8%
2%
5.3%
Electrical machinery, apparatus, energy
2%
4.8%
1.2%
Handling
4.9%
0.1%
0.4%

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.

Apple

Collected applications
531
Share of collected applications with IPC
4.8%

Coverage is incomplete; counts and shares describe only the collected subset.

View Apple publications in this field

CXMT

Collected applications
18
Share of collected applications with IPC
1.2%

Coverage is incomplete; counts and shares describe only the collected subset.

View CXMT publications in this field

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
Apple3,635
CXMT60
H04LDigital transmission
Amazon442
Apple2,146
CXMT7
G06TImage processing
Amazon101
Apple986
CXMT4
H04BTransmission
Amazon40
Apple981
CXMT2
G06VImage and video recognition
Amazon138
Apple417
CXMT2
G06NComputing models, AI
Amazon257
Apple200
CXMT2
H02JPower supply, energy storage
Amazon15
Apple225
CXMT1
H05KPrinted circuits, assemblies
Amazon20
Apple155
CXMT7
G01CNavigation, surveying
Amazon22
Apple115
CXMT1
G08B
Amazon20
Apple72
CXMT2

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

  • G06FData processing
    Amazon
    912
    Apple
    3,635
    CXMT
    60
  • G10LSpeech processing
    Amazon
    275
    Apple
    240
    CXMT
    —
  • G06NComputing models, AI
    Amazon
    257
    Apple
    200
    CXMT
    2
  • G06QBusiness data processing
    Amazon
    154
    Apple
    264
    CXMT
    —
  • H04LDigital transmission
    Amazon
    442
    Apple
    2,146
    CXMT
    7
  • G06VImage and video recognition
    Amazon
    138
    Apple
    417
    CXMT
    2

Apple

  • H04WWireless networks
    Amazon
    114
    Apple
    3,570
    CXMT
    —
  • H04BTransmission
    Amazon
    40
    Apple
    981
    CXMT
    2
  • G02BOptical elements
    Amazon
    11
    Apple
    679
    CXMT
    —
  • G06TImage processing
    Amazon
    101
    Apple
    986
    CXMT
    4
  • H04MTelephonic communication
    Amazon
    20
    Apple
    405
    CXMT
    —
  • G09GDisplay control
    Amazon
    4
    Apple
    300
    CXMT
    —

CXMT

  • H10BMemory devices
    Amazon
    —
    Apple
    —
    CXMT
    689
  • G11CStatic stores
    Amazon
    —
    Apple
    37
    CXMT
    480
  • H01LSemiconductor devices
    Amazon
    —
    Apple
    135
    CXMT
    378
  • H10D
    Amazon
    —
    Apple
    76
    CXMT
    220
  • H10W
    Amazon
    —
    Apple
    73
    CXMT
    161
  • H10P
    Amazon
    —
    Apple
    —
    CXMT
    68

04Publication rhythm

AmazonAppleCXMTPublications per period
Publications per period
PeriodAmazonAppleCXMT
2025-01≥242 (partial coverage)≥1,049 (partial coverage)≥233 (partial coverage)
2025-02≥149 (partial coverage)≥968 (partial coverage)≥180 (partial coverage)
2025-03≥130 (partial coverage)≥1,319 (partial coverage)≥99 (partial coverage)
2025-04≥168 (partial coverage)≥1,232 (partial coverage)≥79 (partial coverage)
2025-05≥186 (partial coverage)≥993 (partial coverage)≥108 (partial coverage)
2025-06≥140 (partial coverage)≥846 (partial coverage)≥177 (partial coverage)
2025-07≥223 (partial coverage)≥956 (partial coverage)≥156 (partial coverage)
2025-08≥161 (partial coverage)≥989 (partial coverage)≥112 (partial coverage)
2025-09≥195 (partial coverage)≥906 (partial coverage)≥148 (partial coverage)
2025-10≥201 (partial coverage)≥928 (partial coverage)≥89 (partial coverage)
2025-11≥141 (partial coverage)≥1,005 (partial coverage)≥64 (partial coverage)
2025-12≥159 (partial coverage)≥1,169 (partial coverage)≥125 (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.