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Official data from INPI

DISPOSITIVO DE LEVANTAMENTO

ConcedidaInvention Patent

Application data

Number

PI7606385

Type

Invention Patent

Filing

12/01/1975

Publication

-

Progress at the INPI

  1. Filing12/01/75
  2. Publication
  3. Examination
  4. Allowance
  5. Grant07/25/89
  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: 07/25/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

W. E. (pessoa física)

Inventors

H. M. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/25/1989

RPI 979

14.4

01/31/1989

RPI 954

110

09/13/1988

RPI 934

110

07/12/1988

RPI 925

120

08/11/1987

RPI 877

Recurso

#12.1

10/13/1981

RPI 573

Carta-patente expirada

#21.1

09/21/1993

RPI 1190

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