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Official data from INPI

SEM TITULO

ConcedidaInvention Patent

Application data

Number

PI8301066

Type

Invention Patent

Filing

03/04/1983

Publication

11/22/1983

Progress at the INPI

  1. Filing03/04/83
  2. Publication11/22/83
  3. Examination03/25/86
  4. Allowance10/13/87
  5. Grant05/31/88
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 05/31/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Knorr_ Bremse Ag

DE

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Inventors

H. E. (pessoa física)

H. J. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/31/1988

RPI 919

Notificação para pagamento de retribuição

#13.1

02/09/1988

RPI 903

Deferimento

#9.1

10/13/1987

RPI 886

14.1

03/04/1987

RPI 854

Pedido de certificado de adição de invenção

#5.1

07/08/1986

RPI 820

Solicitação de exame técnico

#4.1

03/25/1986

RPI 805

Publicação do pedido de patente

#3.1

11/22/1983

RPI 683

Pedido de patente depositado

#2.1

04/19/1983

RPI 652

Carta-patente expirada

#21.1

Patente extinta em 04/03/98

07/01/2008

RPI 1956

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