Official data from INPI

SEM TITULO

ConcedidaInvention Patent

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Application data

Number

PI8106691

Type

Invention Patent

Filing

10/16/1981

Publication

06/29/1982

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Progress at the INPI

Filing10/16/81
Publication06/29/82
Examination11/23/82
Allowance03/31/87
Grant09/29/87
Terminated03/19/96

The patent was granted on 09/29/1987 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: 09/29/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Hooker Chemicals & Plastics Corporation

Inventors

W. S. (pessoa física)

Technical data

IPC Classification

C25D 3/12

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/29/1987

RPI 884

Deferimento

#9.1

03/31/1987

RPI 858

Exigência - art. 36 da LPI

#6.1

04/24/1984

RPI 705

Solicitação de exame técnico

#4.1

11/23/1982

RPI 631

Publicação do pedido de patente

#3.1

06/29/1982

RPI 610

Pedido de patente depositado

#2.1

12/01/1981

RPI 580

Anuidade - prazo legal encerrado

#18.2

03/19/1996

RPI 1320

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