Official data from INPI

Catalisador e processo de preapração de catalisador.

ConcedidaInvention Patent

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Application data

Number

PI8104565

Type

Invention Patent

Filing

07/16/1980

Publication

04/06/1982

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Progress at the INPI

Filing07/16/80
Publication04/06/82
Examination08/03/82
Allowance03/11/86
Grant12/30/86
Terminated09/13/94

The patent was granted on 12/30/1986 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 12/30/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Dyson Refractories Limited

Inventors

J. R. (pessoa física)

S. M. (pessoa física)

Technical data

IPC Classification

B01J 23/76 C01G 53/00 C07B 61/00 C07C 1/00 C07C 1/10 C07C 67/00 C07C 9/00 C07C 9/04

Priority claims

8023225 · 07/16/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/30/1986

RPI 845

Notificação para pagamento de retribuição

#13.1

07/01/1986

RPI 819

Deferimento

#9.1

03/11/1986

RPI 803

Exigência - art. 36 da LPI

#6.1

04/16/1985

RPI 756

Pedido de certificado de adição de invenção

#5.1

01/25/1983

RPI 640

Solicitação de exame técnico

#4.1

08/03/1982

RPI 615

Publicação do pedido de patente

#3.1

04/06/1982

RPI 598

Anuidade - prazo legal encerrado

#18.2

09/13/1994

RPI 1241

From the same holder

CATALISADORES E MÉTODOS A ESTES RELATIVOS Processo de preparação de catalisador.Sistema de vazamento para lingotamento ascendente.

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