Official data from INPI

COMPOSICAO E PROCESSO PARA REMOVER,QUIMICAMENTE,DEPOSITOS METALICOS

ConcedidaInvention Patent

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Application data

Number

PI8005840

Type

Invention Patent

Filing

11/15/1979

Publication

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Progress at the INPI

Filing11/15/79
Publication
Examination11/03/81
Allowance01/06/87
Grant07/28/87
Terminated08/02/94

The patent was granted on 07/28/1987 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: 07/28/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

OXY METAL INDUSTRIES CORP [US]

Inventors

T. L. (pessoa física)

Technical data

IPC Classification

C23G 1/02

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/28/1987

RPI 875

Notificação para pagamento de retribuição

#13.1

06/09/1987

RPI 868

Deferimento

#9.1

01/06/1987

RPI 846

Republicação - classificação IPC

#15.11

02/21/1984

RPI 696

Exigência - art. 36 da LPI

#6.1

01/10/1984

RPI 690

Solicitação de exame técnico

#4.1

11/03/1981

RPI 576

Anuidade - prazo legal encerrado

#18.2

08/02/1994

RPI 1235

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