GB641469A - Improved piezoelectric crystals - Google Patents

Improved piezoelectric crystals

Info

Publication number
GB641469A
GB641469A GB34524/46A GB3452446A GB641469A GB 641469 A GB641469 A GB 641469A GB 34524/46 A GB34524/46 A GB 34524/46A GB 3452446 A GB3452446 A GB 3452446A GB 641469 A GB641469 A GB 641469A
Authority
GB
United Kingdom
Prior art keywords
elements
degrees
length
major faces
face
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
GB34524/46A
Other languages
English (en)
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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
Priority claimed from US497883A external-priority patent/US2450010A/en
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB641469A publication Critical patent/GB641469A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/02007—Details of bulk acoustic wave devices
    • H03H9/02015—Characteristics of piezoelectric layers, e.g. cutting angles
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/02007—Details of bulk acoustic wave devices
    • H03H9/02157—Dimensional parameters, e.g. ratio between two dimension parameters, length, width or thickness

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
GB34524/46A 1943-08-09 1946-11-21 Improved piezoelectric crystals Expired GB641469A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US497883A US2450010A (en) 1943-08-09 1943-08-09 Piezoelectric crystal apparatus
US637127A US2484635A (en) 1943-08-09 1945-12-24 Piezoelectric crystal apparatus

Publications (1)

Publication Number Publication Date
GB641469A true GB641469A (en) 1950-08-16

Family

ID=27052640

Family Applications (3)

Application Number Title Priority Date Filing Date
GB34524/46A Expired GB641469A (en) 1943-08-09 1946-11-21 Improved piezoelectric crystals
GB37772/46A Expired GB641470A (en) 1943-08-09 1946-12-23 Piezoelectric crystal elements
GB37773/46A Expired GB641471A (en) 1943-08-09 1946-12-23 Piezoelectric crystal elements

Family Applications After (2)

Application Number Title Priority Date Filing Date
GB37772/46A Expired GB641470A (en) 1943-08-09 1946-12-23 Piezoelectric crystal elements
GB37773/46A Expired GB641471A (en) 1943-08-09 1946-12-23 Piezoelectric crystal elements

Country Status (4)

Country Link
US (1) US2484635A (enrdf_load_html_response)
BE (1) BE472576A (enrdf_load_html_response)
FR (1) FR938529A (enrdf_load_html_response)
GB (3) GB641469A (enrdf_load_html_response)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4231146A (en) * 1976-03-19 1980-11-04 Pentel Kabushiki Kaisha Method of making a tip for a ball point pen

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2680720A (en) * 1944-06-08 1954-06-08 Clevite Corp Piezoelectric crystal body comprised of rubidium compound
USRE25413E (en) * 1961-07-05 1963-07-09 Temperature xc
US3461408A (en) * 1967-02-09 1969-08-12 Bell Telephone Labor Inc Oriented litao3 crystal and devices using same
US3694676A (en) * 1971-03-17 1972-09-26 Zenith Radio Corp Shear mode piezoelectric filter

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2303375A (en) * 1941-06-10 1942-12-01 Bell Telephone Labor Inc Rochelle salt piezoelectric crystal apparatus
GB569285A (en) * 1942-11-21 1945-05-16 Patelhold Patentverwertung Piezo-electric device
US2373445A (en) * 1943-01-18 1945-04-10 Brush Dev Co Piezoelectric device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4231146A (en) * 1976-03-19 1980-11-04 Pentel Kabushiki Kaisha Method of making a tip for a ball point pen

Also Published As

Publication number Publication date
US2484635A (en) 1949-10-11
GB641471A (en) 1950-08-16
FR938529A (fr) 1948-10-18
BE472576A (enrdf_load_html_response)
GB641470A (en) 1950-08-16

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