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Official data from INPI

SEM TITULO

Em AnáliseInvention Patent

Application data

Number

PI8206763

Type

Invention Patent

Filing

11/23/1982

Publication

03/15/1983

Progress at the INPI

  1. Filing11/23/82
  2. Publication03/15/83
  3. Examination06/14/83
  4. Allowance03/19/85
  5. Grant08/27/85
  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: 03/01/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Metalurgica Detroit S/A

SP, BR

See this company's full portfolio

Inventors

P. [. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

320

03/01/1988

RPI 906

300

11/03/1987

RPI 889

201

06/23/1987

RPI 870

201

02/17/1987

RPI 852

Pedido de licença voluntária

#17.1

10/21/1986

RPI 835

Pedido de licença voluntária

#17.1

07/15/1986

RPI 821

Pedido de licença compulsória

#20.1

04/29/1986

RPI 810

Concessão da patente

#16.1

08/27/1985

RPI 775

Notificação para pagamento de retribuição

#13.1

07/09/1985

RPI 768

Deferimento

#9.1

03/19/1985

RPI 752

Pedido de certificado de adição de invenção

#5.1

10/25/1983

RPI 679

Solicitação de exame técnico

#4.1

06/14/1983

RPI 660

Publicação antecipada

#3.2

03/15/1983

RPI 647

Pedido de patente depositado

#2.1

01/18/1983

RPI 639

Carta-patente expirada

#21.1

Patente extinta em 23/11/97

07/01/2008

RPI 1956

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