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Official data from INPI

ESTRUTURA REFRATÁRIA E PROCESSO PARA ISOLAMENTO DA FACE DE EXTREMIDADE FRIA DE UM CORPO REFRATÓRIO.

Em AnáliseInvention Patent

Application data

Number

PI8002190

Type

Invention Patent

Filing

04/09/1980

Publication

-

Progress at the INPI

  1. Filing04/09/80
  2. Publication
  3. Examination
  4. Allowance02/28/84
  5. Grant08/28/84
  6. Terminated09/25/90

The patent was granted on 08/28/1984 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: 07/11/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

General Refractories Company

US

Inventors

M. J. (pessoa física)

Technical data

IPC Classification

Priority claims

US

028.887 · 04/10/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

20.7

07/11/1989

RPI 977

Concessão da patente

#16.1

08/28/1984

RPI 723

Notificação para pagamento de retribuição

#13.1

06/12/1984

RPI 712

Deferimento

#9.1

02/28/1984

RPI 697

Exigência - art. 36 da LPI

#6.1

08/09/1983

RPI 668

Anuidade - prazo legal encerrado

#18.2

09/25/1990

RPI 1034

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