Official data from INPI

PROCESSO PARA A PREPARACAO DE ACIDO FOSFORICO

Em AnáliseInvention Patent

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Application data

Number

PI7700040

Type

Invention Patent

Filing

07/07/1976

Publication

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Progress at the INPI

Filing07/07/76
Publication
Examination
Allowance05/18/82
Grant11/30/82
Terminated11/16/88

The patent was granted on 11/30/1982 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: 11/16/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

OCCIDENTAL PETROLEUM CORP [US]

Inventors

E. [. (pessoa física)

M. [. (pessoa física)

O. [. (pessoa física)

Technical data

IPC Classification

C01B 25/22

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

11/16/1988

RPI 943

Concessão da patente

#16.1

11/30/1982

RPI 632

Notificação para pagamento de retribuição

#13.1

09/08/1982

RPI 620

Deferimento

#9.1

05/18/1982

RPI 604

Exigência - art. 36 da LPI

#6.1

10/20/1981

RPI 574

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