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PCE
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CPC Subgroup
G01N 3/30

by applying a single impulsive force, e.g. by falling weight

Full Title

Investigating strength properties of solid materials by application of mechanical stress > by applying a single impulsive force, e.g. by falling weight

5 direct subcodes

Child Classifications

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  • G01N 3/303 generated only by free-falling weight
  • G01N 3/307 generated by a compressed or tensile-stressed spring; generated by pneumatic or hydraulic means
  • G01N 3/31 generated by a rotating fly-wheel
  • G01N 3/313 generated by explosives
  • G01N 3/317 generated by electromagnetic means

Top Applicants

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

  1. CHINESE ACADEMY OF SCIENCES 21,460
  2. ROBERT BOSCH DE 17,801
  3. SGCC(STATE GRID CORPORATION OF CHINA) 17,347
  4. SAMSUNG ELECTRONICS COMPANY KR 13,192
  5. QUALCOMM US 9,900
  6. HALLIBURTON ENERGY SERVICES GROUP US 9,742
  7. PHILIPS ELECTRONICS NL 7,249
  8. MITSUBISHI ELECTRIC CORPORATION JP 6,503
  9. ZHEJIANG UNIVERSITY 6,414
  10. DENSO CORPORATION JP 6,382