Official data from INPI

PROCESSO DE ELIMINAÇÃO DO ANIDRIDO SULFUROSO PRESENTE NO ÁCIDO FLUORÍDRICO COMERCIAL

ConcedidaInvention Patent

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Application data

Number

PI8307065

Type

Invention Patent

Filing

12/22/1983

Publication

07/31/1984

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Progress at the INPI

Filing12/22/83
Publication07/31/84
Examination05/20/86
Allowance11/29/88
Grant08/29/89
Terminated05/30/95

The patent was granted on 08/29/1989 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: 08/29/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

U. P. (pessoa física)

Inventors

P. V. (pessoa física)

Technical data

IPC Classification

C01B 7/19

Priority claims

82 22053 · 12/23/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/29/1989

RPI 984

Notificação para pagamento de retribuição

#13.1

04/25/1989

RPI 966

Deferimento

#9.1

11/29/1988

RPI 945

Exigência - art. 36 da LPI

#6.1

05/31/1988

RPI 919

6.2

06/23/1987

RPI 870

Solicitação de exame técnico

#4.1

05/20/1986

RPI 813

Publicação do pedido de patente

#3.1

07/31/1984

RPI 719

Pedido de patente depositado

#2.1

03/13/1984

RPI 699

Anuidade - prazo legal encerrado

#18.2

05/30/1995

RPI 1278

14.1

03/27/1990

RPI 1011

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