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MicrosoftPetroChinaSpaceX

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.

Microsoft: Applicant names included in these statistics — MICROSOFT TECHNOLOGY LICENSING LLCReviewed names not covered — MICROSOFT TECHNOLOGY LICENSING, LLC · MICROSOFT TECHNOLOGY LICENSING, LLC.

PetroChina: Applicant names included in these statistics — PETROCHINA CO LTDReviewed names not covered — PETROCHINA COMPANY LIMITED · 中国石油天然气股份有限公司

SpaceX: Applicant names included in these statistics — SPACE EXPLORATION TECH CORPReviewed names not covered — SPACE EXPLORATION TECHNOLOGIES CORP. · SPACE EXPLORATION TECHNOLOGIES CORPORATION

Microsoft

Publications
7,140
Invention share
97%
Concentration
0.59
Green technology
—

PetroChina

Publications
6,110
Invention share
95%
Concentration
0.25
Green technology
—

SpaceX

Publications
71
Invention share
80%
Concentration
0.71
Green technology
—
0.46

Microsoft × PetroChina

0.15

Microsoft × SpaceX

0.04

PetroChina × SpaceX

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 fieldMicrosoft / PetroChina / SpaceX
Computer technology
72.5%
22.4%
0%
Telecommunications
3.3%
0.1%
78.1%
Digital communication
22.4%
0.7%
29.7%
Civil engineering
0.3%
31.5%
0%
Measurement
2.1%
22.9%
3.1%
IT methods for management
4.2%
9.5%
0%
Audio-visual technology
10.5%
0.4%
1.6%
Basic materials chemistry
0.1%
11.9%
0%
Basic communication processes
1.3%
0%
9.4%
Electrical machinery, apparatus, energy
2.1%
3.6%
4.7%
Macromolecular chemistry, polymers
0%
6.9%
3.1%
Chemical engineering
0.2%
9%
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.

H04LDigital transmission
Microsoft1,379
PetroChina32
SpaceX13
H02JPower supply, energy storage
Microsoft54
PetroChina69
SpaceX2

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.

Microsoft

  • G06FData processing
    Microsoft
    3,890
    PetroChina
    1,114
    SpaceX
    —
  • G06NComputing models, AI
    Microsoft
    1,064
    PetroChina
    268
    SpaceX
    —
  • H04NPictorial communication, video
    Microsoft
    482
    PetroChina
    —
    SpaceX
    —
  • G06TImage processing
    Microsoft
    479
    PetroChina
    180
    SpaceX
    —
  • G10LSpeech processing
    Microsoft
    250
    PetroChina
    —
    SpaceX
    —
  • G02BOptical elements
    Microsoft
    236
    PetroChina
    —
    SpaceX
    —

PetroChina

  • E21B
    Microsoft
    —
    PetroChina
    1,882
    SpaceX
    —
  • G01NAnalysing materials
    Microsoft
    12
    PetroChina
    752
    SpaceX
    —
  • G01V
    Microsoft
    —
    PetroChina
    571
    SpaceX
    —
  • B01J
    Microsoft
    10
    PetroChina
    385
    SpaceX
    —
  • C09KMaterials for applications
    Microsoft
    —
    PetroChina
    330
    SpaceX
    —
  • G06QBusiness data processing
    Microsoft
    290
    PetroChina
    577
    SpaceX
    —

SpaceX

  • H01QAntennas
    Microsoft
    16
    PetroChina
    —
    SpaceX
    30
  • H04BTransmission
    Microsoft
    108
    PetroChina
    —
    SpaceX
    29
  • H04WWireless networks
    Microsoft
    196
    PetroChina
    —
    SpaceX
    15
  • H03L
    Microsoft
    15
    PetroChina
    —
    SpaceX
    4
  • F16BFasteners
    Microsoft
    —
    PetroChina
    —
    SpaceX
    2
  • H02H
    Microsoft
    —
    PetroChina
    —
    SpaceX
    2

04Publication rhythm

MicrosoftPetroChinaSpaceXPublications per period
Publications per period
PeriodMicrosoftPetroChinaSpaceX
2025-01≥539 (partial coverage)≥410 (partial coverage)≥6 (partial coverage)
2025-02≥503 (partial coverage)≥695 (partial coverage)≥10 (partial coverage)
2025-03≥603 (partial coverage)≥574 (partial coverage)≥6 (partial coverage)
2025-04≥647 (partial coverage)≥558 (partial coverage)≥3 (partial coverage)
2025-05≥566 (partial coverage)≥1,028 (partial coverage)≥10 (partial coverage)
2025-06≥487 (partial coverage)≥674 (partial coverage)≥7 (partial coverage)
2025-07≥686 (partial coverage)≥299 (partial coverage)≥8 (partial coverage)
2025-08≥563 (partial coverage)≥143 (partial coverage)≥2 (partial coverage)
2025-09≥587 (partial coverage)≥486 (partial coverage)≥7 (partial coverage)
2025-10≥689 (partial coverage)≥403 (partial coverage)≥3 (partial coverage)
2025-11≥582 (partial coverage)≥383 (partial coverage)≥6 (partial coverage)
2025-12≥688 (partial coverage)≥457 (partial coverage)≥3 (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.