Official data from INPI

SEM TITULO

ConcedidaInvention Patent

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Application data

Number

PI7902488

Type

Invention Patent

Filing

04/23/1979

Publication

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Progress at the INPI

Filing04/23/79
Publication
Examination
Allowance08/04/87
Grant02/23/88
Terminated07/20/93

The patent was granted on 02/23/1988 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: 02/23/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

H. A. (pessoa física)

Inventors

H. M. (pessoa física)

L. A. (pessoa física)

Technical data

IPC Classification

C11D 1/66 C11D 1/835

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

02/23/1988

RPI 905

Notificação para pagamento de retribuição

#13.1

11/24/1987

RPI 892

Deferimento

#9.1

08/04/1987

RPI 876

Conhecimento de parecer técnico

#7.1

11/08/1983

RPI 681

6.2

05/04/1982

RPI 602

Anuidade - prazo legal encerrado

#18.2

07/20/1993

RPI 1181

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