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Official data from INPI

CONEXAO DE DERIVACAO

ConcedidaInvention Patent

Application data

Number

PI7701379

Type

Invention Patent

Filing

03/08/1977

Publication

-

Progress at the INPI

  1. Filing03/08/77
  2. Publication
  3. Examination
  4. Allowance11/10/81
  5. Grant05/31/83
  6. Expired07/27/93

The letters patent expired on 07/27/1993: 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: 05/31/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

HANSEN INDUSTRIAL

Inventors

C. D. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/31/1983

RPI 658

110

03/01/1983

RPI 645

Recurso

#12.1

04/27/1982

RPI 601

Deferimento

#9.1

11/10/1981

RPI 577

Carta-patente expirada

#21.1

07/27/1993

RPI 1182

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