Official data from INPI

PROCESSO DE OBTENCAO DOS SAIS QUATERNARIOS DE AMONIO

ConcedidaInvention Patent

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Application data

Number

PI7705285

Type

Invention Patent

Filing

08/10/1977

Publication

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Progress at the INPI

Filing08/10/77
Publication
Examination
Allowance08/24/82
Grant02/22/83
Expired07/06/93

The letters patent expired on 07/06/1993: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 02/22/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

HERGA IND QUIMICAS SA

Inventors

A. A. (pessoa física)

B. C. (pessoa física)

Technical data

IPC Classification

C07C 85/08 C07C 87/30

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

02/22/1983

RPI 644

Notificação para pagamento de retribuição

#13.1

01/11/1983

RPI 638

Deferimento

#9.1

08/24/1982

RPI 618

Exigência - art. 36 da LPI

#6.1

02/16/1982

RPI 591

Carta-patente expirada

#21.1

07/06/1993

RPI 1179

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