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Official data from INPI

PROCESSO PARA PREPARAÇÃO DE UMA LIGA E LIGA ASSIM OBTIDA

ConcedidaInvention Patent

Application data

Number

PI8301065

Type

Invention Patent

Filing

03/04/1983

Publication

11/22/1983

Progress at the INPI

  1. Filing03/04/83
  2. Publication11/22/83
  3. Examination03/07/84
  4. Allowance05/16/89
  5. Grant11/28/89
  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: 11/28/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Minerals Technologies, Inc.

US

Pfizer, Inc.

US

See this company's full portfolio

Inventors

D. D. (pessoa física)

US

M. L. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

356.580 · 03/09/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/28/1989

RPI 997

Notificação para pagamento de retribuição

#13.1

09/12/1989

RPI 986

Deferimento

#9.1

05/16/1989

RPI 969

Exigência - art. 36 da LPI

#6.1

12/20/1988

RPI 948

Conhecimento de parecer técnico

#7.1

04/30/1985

RPI 758

Solicitação de exame técnico

#4.1

03/07/1984

RPI 698

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

Pedido de licença compulsória

#20.1

09/12/1995

RPI 1293

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