BE472576A - - Google Patents
Info
- Publication number
- BE472576A BE472576A BE472576DA BE472576A BE 472576 A BE472576 A BE 472576A BE 472576D A BE472576D A BE 472576DA BE 472576 A BE472576 A BE 472576A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; 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 devices; 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)
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 |
|---|---|
| BE472576A true BE472576A (fr) |
Family
ID=27052640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE472576D BE472576A (fr) | 1943-08-09 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2484635A (fr) |
| BE (1) | BE472576A (fr) |
| FR (1) | FR938529A (fr) |
| GB (3) | GB641469A (fr) |
Families Citing this family (5)
| 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 |
| IT1086630B (it) * | 1976-03-19 | 1985-05-28 | Pentel Kk | Punta per penna a sfera e procedimento di produzione |
Family Cites Families (3)
| 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 |
-
0
- BE BE472576D patent/BE472576A/xx unknown
-
1945
- 1945-12-24 US US637127A patent/US2484635A/en not_active Expired - Lifetime
-
1946
- 1946-11-21 GB GB34524/46A patent/GB641469A/en not_active Expired
- 1946-12-17 FR FR938529D patent/FR938529A/fr not_active Expired
- 1946-12-23 GB GB37772/46A patent/GB641470A/en not_active Expired
- 1946-12-23 GB GB37773/46A patent/GB641471A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2484635A (en) | 1949-10-11 |
| GB641470A (en) | 1950-08-16 |
| GB641471A (en) | 1950-08-16 |
| GB641469A (en) | 1950-08-16 |
| FR938529A (fr) | 1948-10-18 |