Official data from INPI

SEM TITULO

ConcedidaInvention Patent

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Application data

Number

PI7403695

Type

Invention Patent

Filing

05/07/1974

Publication

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Progress at the INPI

Filing05/07/74
Publication
Examination
Allowance
Grant04/27/82
Expired08/25/92

The letters patent expired on 08/25/1992: 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: 04/27/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

sika Ag. Vormals Kaspar Winkler & Co.

Inventors

E. B. (pessoa física)

Technical data

IPC Classification

C04B 24/22 C04B 24/24 C04B 24/26 C04B 24/32 C04B 24/38

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/27/1982

RPI 601

Notificação para pagamento de retribuição

#13.1

11/10/1981

RPI 577

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: C04B 31/34; C04B 31/36.

03/27/2018

RPI 2464

Carta-patente expirada

#21.1

08/25/1992

RPI 1134

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