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Official data from INPI

MASSA PARA MOLDAGEM IGNÍFUGA

ConcedidaInvention Patent

Application data

Number

PI8301276

Type

Invention Patent

Filing

03/15/1983

Publication

11/22/1983

Progress at the INPI

  1. Filing03/15/83
  2. Publication11/22/83
  3. Examination03/11/86
  4. Allowance05/02/89
  5. Grant10/24/89
  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: 10/24/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Du Pont de Nemours GmbH

DE

Inventors

D. B. (pessoa física)

DE

Technical data

IPC Classification

Priority claims

CH

1638/82 · 03/16/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/24/1989

RPI 992

Notificação para pagamento de retribuição

#13.1

09/05/1989

RPI 985

Deferimento

#9.1

05/02/1989

RPI 967

Exigência - art. 36 da LPI

#6.1

06/21/1988

RPI 922

6.2

01/13/1987

RPI 847

Solicitação de exame técnico

#4.1

03/11/1986

RPI 803

Publicação do pedido de patente

#3.1

11/22/1983

RPI 683

Pedido de patente depositado

#2.1

05/03/1983

RPI 654

Carta-patente expirada

#21.1

Patente extinta em 15/03/98

07/01/2008

RPI 1956

Pedido de licença compulsória

#20.1

10/04/1994

RPI 1244

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