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Official data from INPI

LIGA À BASE DE ELEVADA PERCENTAGEM DE NÍQUEL-CROMO.

ConcedidaInvention Patent

Application data

Number

PI8204152

Type

Invention Patent

Filing

07/16/1982

Publication

07/26/1983

Progress at the INPI

  1. Filing07/16/82
  2. Publication07/26/83
  3. Examination09/11/84
  4. Allowance11/03/87
  5. Grant07/26/88
  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: 07/26/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Haynes International, Inc.

US

See this company's full portfolio

Inventors

A. I. (pessoa física)

M. E. (pessoa física)

S. L. (pessoa física)

Technical data

IPC Classification

Priority claims

US

284.169 · 07/17/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/26/1988

RPI 927

14.1

03/29/1988

RPI 910

Notificação para pagamento de retribuição

#13.1

03/01/1988

RPI 906

Deferimento

#9.1

11/03/1987

RPI 889

11.8

08/25/1987

RPI 879

Retificação

#15.3

06/09/1987

RPI 868

Republicação - classificação IPC

#15.11

04/30/1985

RPI 758

Conhecimento de parecer técnico

#7.1

03/19/1985

RPI 752

Solicitação de exame técnico

#4.1

09/11/1984

RPI 725

Publicação do pedido de patente

#3.1

07/26/1983

RPI 666

Pedido de patente depositado

#2.1

08/31/1982

RPI 619

Carta-patente expirada

#21.1

Patente extinta em 16/07/97

07/01/2008

RPI 1956

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