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Official data from INPI

SEM TITULO

PublicadaInvention Patent
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Application data

Number

PI8701887

Type

Invention Patent

Filing

04/21/1987

Publication

02/02/1988
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Progress at the INPI

  1. Filing04/21/87
  2. Publication02/02/88
  3. Abandoned08/28/90
  4. Allowance
  5. Grant
  6. In force

The application was abandoned: the INPI technical office action was not answered in time (art. 36 of the Brazilian IP Act). The technology is in the public domain in Brazil.

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Latest action published by the INPI: 02/02/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Vesuvius Crucible Company

US

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Inventors

F. K. (pessoa física)

H. B. (pessoa física)

Technical data

IPC Classification

C04B 35/10C04B 35/52C04B 35/58C04B 35/599F27D 1/00F27D 3/14

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

02/02/1988

RPI 902

Pedido de patente depositado

#2.1

07/28/1987

RPI 875

Arquivamento - Art. 36 §1° da LPI

#11.2

07/19/1994

RPI 1233

Exigência - art. 36 da LPI

#6.1

11/16/1993

RPI 1198

Solicitação de exame técnico

#4.1

08/28/1990

RPI 1030

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