CA971670A - Apparatus for obtaining statistical indices and analyzing the same and method - Google Patents

Apparatus for obtaining statistical indices and analyzing the same and method

Info

Publication number
CA971670A
CA971670A CA128,835A CA128835A CA971670A CA 971670 A CA971670 A CA 971670A CA 128835 A CA128835 A CA 128835A CA 971670 A CA971670 A CA 971670A
Authority
CA
Canada
Prior art keywords
analyzing
same
obtaining statistical
statistical indices
indices
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA128,835A
Other languages
English (en)
Other versions
CA128835S (fr
Inventor
Wallace H. Coulter
Walter R. Hogg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of CA971670A publication Critical patent/CA971670A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/48—Analogue computers for specific processes, systems or devices, e.g. simulators
    • G06G7/75—Analogue computers for specific processes, systems or devices, e.g. simulators for component analysis, e.g. of mixtures, of colours
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/10—Investigating individual particles
    • G01N15/1031—Investigating individual particles by measuring electrical or magnetic effects
    • G01N15/12—Investigating individual particles by measuring electrical or magnetic effects by observing changes in resistance or impedance across apertures when traversed by individual particles, e.g. by using the Coulter principle
    • G01N15/131—Details
    • G01N15/132—Circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Theoretical Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Dispersion Chemistry (AREA)
  • Mathematical Physics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
CA128,835A 1970-12-02 1971-11-29 Apparatus for obtaining statistical indices and analyzing the same and method Expired CA971670A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US9442670A 1970-12-02 1970-12-02
US00173912A US3812335A (en) 1970-12-02 1971-08-23 Apparatus for obtaining statistical indices and analyzing the same and method

Publications (1)

Publication Number Publication Date
CA971670A true CA971670A (en) 1975-07-22

Family

ID=26788861

Family Applications (1)

Application Number Title Priority Date Filing Date
CA128,835A Expired CA971670A (en) 1970-12-02 1971-11-29 Apparatus for obtaining statistical indices and analyzing the same and method

Country Status (8)

Country Link
US (1) US3812335A (it)
CA (1) CA971670A (it)
DE (1) DE2159180C3 (it)
FR (1) FR2117150A5 (it)
GB (1) GB1371077A (it)
IT (1) IT945196B (it)
NL (1) NL7116343A (it)
SE (1) SE373967B (it)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3944797A (en) * 1974-08-06 1976-03-16 Coulter Electronics, Inc. Method and apparatus for determining the correct percentiles of the size distribution of a particulate system
US4488248A (en) * 1980-12-05 1984-12-11 Toa Medical Electronics Co., Ltd. Particle size distribution analyzer
US4858154A (en) * 1986-04-07 1989-08-15 Coulter Electronics, Inc. Interlaboratory quality assurance program
US4817446A (en) * 1986-07-25 1989-04-04 Toa Medical Electronics Co. Ltd. Particle size distribution analysis

Also Published As

Publication number Publication date
FR2117150A5 (it) 1972-07-21
US3812335A (en) 1974-05-21
IT945196B (it) 1973-05-10
DE2159180B2 (de) 1975-05-15
NL7116343A (it) 1972-06-06
DE2159180A1 (de) 1972-06-15
DE2159180C3 (de) 1976-01-02
SE373967B (it) 1975-02-17
GB1371077A (en) 1974-10-23

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