Official data from INPI

PROCESSO PARA A PREPARACAO CONTINUA DE ESTERES DE ACIDO NITRICO DE ALCOOIS POLIVALENTES

ConcedidaInvention Patent

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Application data

Number

PI7902919

Type

Invention Patent

Filing

05/12/1978

Publication

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Progress at the INPI

Filing05/12/78
Publication
Examination12/29/81
Allowance02/16/83
Grant08/30/83
Expired07/26/94

The letters patent expired on 07/26/1994: 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: 08/30/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

MEISSNER GMBH & CO KG JOSEF

Inventors

G. H. (pessoa física)

Technical data

IPC Classification

C07C 76/04 C07C 77/02

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/30/1983

RPI 671

Notificação para pagamento de retribuição

#13.1

06/14/1983

RPI 660

Deferimento

#9.1

02/16/1983

RPI 643

6.2

06/22/1982

RPI 609

Solicitação de exame técnico

#4.1

12/29/1981

RPI 584

Carta-patente expirada

#21.1

07/26/1994

RPI 1234

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