MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED BY A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; TRANSFERRING OR TRANSDUCING ARRANGEMENTS NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR

Introduced: September 1968

Classification Context

Section:: PHYSICS
Class:: MEASURING; TESTING
Subclass:: MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED BY A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; TRANSFERRING OR TRANSDUCING ARRANGEMENTS NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR

Description

G01D provides a residual classification for measurement and testing technologies that are either generic in nature or do not fit within specialized subclasses dedicated to specific variables (such as length, temperature, or pressure). It covers multi-variable measurement systems where the combination of measured parameters cannot be classified under a single dedicated subclass, as well as tariff metering apparatus and generic transducing/transferring arrangements applicable across multiple measurement domains. This subclass also serves as a catch-all for measurement and testing methods or apparatus that lack adequate coverage in more specific G01 subclasses, making it essential for inventions with broad or cross-disciplinary measurement applications.

Filing statistics

IPC subclass G01D recorded 207,395 patent applications worldwide between 2013 and 2023. Annual filings grew from 8,512 in 2013 to 26,194 in 2023 (+208%), peaking at 28,550 applications in 2020. The most active applicants in class G01 are SGCC(STATE GRID CORPORATION OF CHINA) (41,447 applications), CHINESE ACADEMY OF SCIENCES (32,952 applications) and ROBERT BOSCH (16,470 applications).

Source: EPO PATSTAT, worldwide filings

In class comparison

G01D ranks 7th of 18 subclasses with filings in G01, with 207,395 applications between 2013 and 2023, 4.4% of the class. Annual filings grew 208% from 2013 to 2023, above the class as a whole (+138%).

Top 10 of 18 subclasses of class G01 by patent applications, 2013–2023
Rank	Subclass	Title	Applications	Share
1	G01N, Investigating or Analysing Materials by Determining Their Chemical or Physical Properties	Investigating or Analysing Materials by Determining Their Chemical or Physical Properties	1,640,918	34.9%
2	G01R, Measuring Electric Variables; Measuring Magnetic Variables	Measuring Electric Variables; Measuring Magnetic Variables	598,083	12.7%
3	G01B, Measuring Length, Thickness or Similar Linear Dimensions; Measuring Angles; Measuring Areas; Measuring Irregularities of Surfaces or Contours	Measuring Length, Thickness or Similar Linear Dimensions; Measuring Angles; Measuring Areas; Measuring Irregularities of Surfaces or Contours	395,662	8.4%
4	G01S, Radio Direction-Finding; Radio Navigation; Determining Distance or Velocity by Use of Radio Waves; Locating or Presence-Detecting by Use of the Reflection or Reradiation of Radio Waves; Analogous Arrangements Using Other Waves	Radio Direction-Finding; Radio Navigation; Determining Distance or Velocity by Use of Radio Waves; Locating or Presence-Detecting by Use of the Reflection or Reradiation of Radio Waves; Analogous Arrangements Using Other Waves	358,214	7.6%
5	G01M, Testing Static or Dynamic Balance of Machines or Structures; Testing of Structures or Apparatus, Not Otherwise Provided for	Testing Static or Dynamic Balance of Machines or Structures; Testing of Structures or Apparatus, Not Otherwise Provided for	339,843	7.2%
6	G01C, Measuring Distances, Levels or Bearings; Surveying; Navigation; Gyroscopic Instruments; Photogrammetry or Videogrammetry	Measuring Distances, Levels or Bearings; Surveying; Navigation; Gyroscopic Instruments; Photogrammetry or Videogrammetry	271,474	5.8%
7	G01D	Measuring Not Specially Adapted for a Specific Variable; Arrangements for Measuring Two or More Variables Not Covered by a Single Other Subclass; Tariff Metering Apparatus; Transferring or Transducing Arrangements Not Specially Adapted for a Specific Variable; Measuring or Testing Not Otherwise Provided for	207,395	4.4%
8	G01F, Measuring Volume, Volume Flow, Mass Flow, or Liquid Level; Metering by Volume	Measuring Volume, Volume Flow, Mass Flow, or Liquid Level; Metering by Volume	157,084	3.3%
9	G01L, Measuring Force, Stress, Torque, Work, Mechanical Power, Mechanical Efficiency, or Fluid Pressure	Measuring Force, Stress, Torque, Work, Mechanical Power, Mechanical Efficiency, or Fluid Pressure	145,069	3.1%
10	G01K, Measuring Temperature; Measuring Quantity of Heat; Thermally-Sensitive Elements Not Otherwise Provided for	Measuring Temperature; Measuring Quantity of Heat; Thermally-Sensitive Elements Not Otherwise Provided for	118,108	2.5%

Source: EPO PATSTAT, worldwide filings

Additional Content

Measuring not specially adapted for a specific variable . Measuring root mean square [RMS] values of currents or voltages Tariff meters . Tariff metering apparatus in taxi's, i.e. taximeters Apparatus actuated by coins, cards or the like with meter-controlled dispensing of liquid, gas, or electricity Tariff meters for measuring the time integral of electric power or current, e.g. electric consumption

Related Keywords

DAMPING of moving-parts of measuring-instruments in generalGRADUATINGINDICATING of measured values in generalLIGHTING of scales of measuring-instrumentsindicating or recording of measured values in generalMEASURING for which provision does not exist elsewherePEN(S) -recordersRECORDING of measured values, in generalREGISTERING of measured values in generalcompensating for the effects of TEMPERATURE change in measuring instruments in generalTRANSDUCERS other than for a single specified variable

11 direct subcodes

Child Classifications

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G01D 1/00 Measuring arrangements giving results other than momentary value of variable, of general application
G01D 11/00 Component parts of measuring arrangements not specially adapted for a specific variable
G01D 13/00 Component parts of indicators for measuring arrangements not specially adapted for a specific variable
G01D 15/00 Component parts of recorders for measuring arrangements not specially adapted for a specific variable
G01D 18/00 Testing or calibrating apparatus or arrangements provided for in groups
G01D 21/00 Measuring or testing not otherwise provided for
G01D 3/00 Measuring arrangements with provision for the special purposes referred to in the subgroups of this group
G01D 4/00 Tariff metering apparatus
G01D 5/00 Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
G01D 7/00 Indicating measured values
G01D 9/00 Recording measured values

Top Applicants

Top 10 applicants by patent filingsfor class G01, 2013–2023, worldwide · Source: EPO PATSTAT

SGCC(STATE GRID CORPORATION OF CHINA) 41,447
CHINESE ACADEMY OF SCIENCES 32,952
ROBERT BOSCH DE 16,470
SAMSUNG ELECTRONICS COMPANY KR 10,052
SINOPEC (CHINA PETROCHEMICAL CORPORATION) 9,573
ZHEJIANG UNIVERSITY 9,529
GUANGDONG POWER GRID CORPORATION 8,615
TSINGHUA UNIVERSITY 7,805
HALLIBURTON ENERGY SERVICES GROUP US 7,796
QUALCOMM US 7,171