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Official data from INPI

SEM TITULO

Em AnáliseInvention Patent

Application data

Number

PI8103400

Type

Invention Patent

Filing

05/29/1981

Publication

01/04/1983

Progress at the INPI

  1. Filing05/29/81
  2. Publication01/04/83
  3. Examination03/05/85
  4. Allowance12/29/87
  5. Grant07/26/88
  6. Expired10/08/96

The letters patent expired on 10/08/1996: 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

Matec Holding AG.

CH

Inventors

F. G. (pessoa física)

H. W. (pessoa física)

V. 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

Concessão da patente

#16.1

07/26/1988

RPI 927

Notificação para pagamento de retribuição

#13.1

05/10/1988

RPI 916

Deferimento

#9.1

12/29/1987

RPI 897

Exigência - art. 36 da LPI

#6.1

08/19/1986

RPI 826

Exigência - art. 36 da LPI

#6.1

11/26/1985

RPI 788

Solicitação de exame técnico

#4.1

03/05/1985

RPI 750

14.1

08/07/1984

RPI 720

Publicação do pedido de patente

#3.1

01/04/1983

RPI 637

Carta-patente expirada

#21.1

10/08/1996

RPI 1349

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