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Official data from INPI

SEM TITULO

Em AnáliseInvention Patent

Application data

Number

PI8300864

Type

Invention Patent

Filing

02/23/1983

Publication

09/25/1984

Progress at the INPI

  1. Filing02/23/83
  2. Publication09/25/84
  3. Examination02/20/85
  4. Allowance09/30/86
  5. Grant06/30/87
  6. Terminated04/02/96

The patent was granted on 06/30/1987 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 10/18/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Kurosaki Refractories Co. Ltd.

JP

See this company's full portfolio

Inventors

N. S. (pessoa física)

T. K. (pessoa física)

Y. T. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

14.7

10/18/1988

RPI 939

Concessão da patente

#16.1

06/30/1987

RPI 871

Notificação para pagamento de retribuição

#13.1

03/04/1987

RPI 854

Deferimento

#9.1

09/30/1986

RPI 832

Exigência - art. 36 da LPI

#6.1

08/20/1985

RPI 774

Solicitação de exame técnico

#4.1

02/20/1985

RPI 748

Publicação do pedido de patente

#3.1

09/25/1984

RPI 727

Pedido de patente depositado

#2.1

04/05/1983

RPI 650

Anuidade - prazo legal encerrado

#18.2

04/02/1996

RPI 1322

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