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Official data from INPI

DISPOSITIVO E PROCESSO UNTRA-SONICO

Em AnáliseInvention Patent

Application data

Number

PI7501148

Type

Invention Patent

Filing

03/19/1974

Publication

-

Progress at the INPI

  1. Filing03/19/74
  2. Publication
  3. Examination
  4. Allowance
  5. Grant07/27/82
  6. Expired09/21/93

The letters patent expired on 09/21/1993: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 11/22/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

CAVITRON CORP

Inventors

P. R. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

11/22/1988

RPI 944

20.4

11/16/1988

RPI 943

Concessão da patente

#16.1

07/27/1982

RPI 614

Carta-patente expirada

#21.1

09/21/1993

RPI 1190

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