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Official data from INPI

APERFEICOAMENTO EM CADEIRA

ConcedidaInvention Patent

Application data

Number

PI7705953

Type

Invention Patent

Filing

09/07/1976

Publication

-

Progress at the INPI

  1. Filing09/07/76
  2. Publication
  3. Examination
  4. Allowance11/03/81
  5. Grant02/22/83
  6. Expired07/06/93

The letters patent expired on 07/06/1993: 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: 02/22/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

CENTER DESIGN RES & DEV

Inventors

A. E. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

02/22/1983

RPI 644

110

10/19/1982

RPI 626

Recurso

#12.1

03/02/1982

RPI 593

Deferimento

#9.1

11/03/1981

RPI 576

Carta-patente expirada

#21.1

07/06/1993

RPI 1179

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