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Official data from INPI

SEM TITULO

Em AnáliseInvention Patent

Application data

Number

PI8303436

Type

Invention Patent

Filing

06/27/1983

Publication

02/07/1984

Progress at the INPI

  1. Filing06/27/83
  2. Publication02/07/84
  3. Examination02/18/86
  4. Allowance07/25/89
  5. Grant05/29/90
  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: 11/21/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DU PONT [US]

See this company's full portfolio

Inventors

L. L. (pessoa física)

S. J. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Notificação para pagamento de retribuição

#13.1

11/21/1989

RPI 996

Deferimento

#9.1

07/25/1989

RPI 979

Exigência - art. 36 da LPI

#6.1

01/17/1989

RPI 952

Exigência - art. 36 da LPI

#6.1

07/19/1988

RPI 926

6.2

08/18/1987

RPI 878

Solicitação de exame técnico

#4.1

02/18/1986

RPI 800

Publicação do pedido de patente

#3.1

02/07/1984

RPI 694

Pedido de patente depositado

#2.1

08/09/1983

RPI 668

Carta-patente expirada

#21.1

Patente extinta em 27/06/98

07/01/2008

RPI 1956

Concessão da patente

#16.1

05/29/1990

RPI 1020

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