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Official data from INPI

PROCESSO PARA A OBTENÇÃO DE UM COMPOSTO DE TÂNTALO DE ELEVADA PUREZA E UM COMPOSTO DE NIÓBIO DE ELEVEDA PUREZA.

PublicadaInvention Patent

Application data

Number

PI8701675

Type

Invention Patent

Filing

04/09/1987

Publication

01/05/1988

Progress at the INPI

  1. Filing04/09/87
  2. Publication01/05/88
  3. Abandoned08/07/90
  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.

Talk to a specialist

Latest action published by the INPI: 01/05/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Sumitomo Chemical Company Limited

JP

See this company's full portfolio

Inventors

I. I. (pessoa física)

JP

K. N. (pessoa física)

JP

M. M. (pessoa física)

JP

Technical data

IPC Classification

Priority claims

JP

82487/86 · 04/10/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

01/05/1988

RPI 898

Pedido de patente depositado

#2.1

07/28/1987

RPI 875

Arquivamento - Art. 36 §1° da LPI

#11.2

11/17/1992

RPI 1146

Exigência - art. 36 da LPI

#6.1

11/12/1991

RPI 1093

Solicitação de exame técnico

#4.1

08/07/1990

RPI 1027

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