Patent assignee · US · COMPANY

Sand 9, Inc.

52Patents
52Active
52Granted
56Portfolio score

Filing activity: Oct 11, 2007 → Sep 24, 2013 · 18 expiring within 5 years

Most-cited patents

PatentTitleAreaCited byStatus
US9029963B2 MEMS microphone Electricity 28 Active
US8058769B2 Mechanical resonating structures including a temperature compensation structure Electricity 25 Active
US8466606B2 Integration of piezoelectric materials with substrates Emerging Cross-Sectional Technologies 22 Active
US8410868B2 Methods and apparatus for temperature control of devices and mechanical resonating structures Electricity 20 Active
US8362675B2 Mechanical resonating structures including a temperature compensation structure Electricity 14 Active
US8395456B2 Variable phase amplifier circuit and method of use Electricity 14 Active
US8689426B2 Method of manufacturing a resonating structure Emerging Cross-Sectional Technologies 13 Active
US8446222B2 Apparatus and methods for reducing noise in oscillating signals Electricity 11 Active
US8698376B2 Microelectromechanical systems (MEMS) resonators and related apparatus and methods Electricity 9 Active
US8629599B2 Mechanical resonating structures including a temperature compensation structure Electricity 8 Active
US8415993B1 Power-on reset circuit and method Electricity 8 Active
US8446078B2 Mechanical resonating structures and methods Electricity 8 Active
US8587183B2 Microelectromechanical systems (MEMS) resonators and related apparatus and methods Electricity 7 Active
US7990229B2 Methods and devices for compensating a signal using resonators Electricity 7 Active
US8228127B2 Oscillators having arbitrary frequencies and related systems and methods Electricity 7 Active
US8704604B2 Oscillators having arbitrary frequencies and related systems and methods Electricity 6 Active
US8174170B1 Methods and apparatus for mechanical resonating structures Electricity 6 Active
US8476809B2 Microelectromechanical systems (MEMS) resonators and related apparatus and methods Electricity 6 Active
US8937425B2 Mechanical resonating structures including a temperature compensation structure Electricity 5 Active
US8319566B2 Methods and apparatus for tuning devices having mechanical resonators Electricity 5 Active
US8446227B2 Methods and apparatus for tuning devices having mechanical resonators Electricity 5 Active
US8456250B2 Methods and apparatus for tuning devices having resonators Electricity 5 Active
US8044737B2 Timing oscillators and related methods Electricity 5 Active
US8772999B2 Signal amplification by hierarchal resonating structures Electricity 5 Active
US9013088B1 Field effect control of a microelectromechanical (MEMS) resonator Electricity 4 Active

Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.