Official data from INPI

PROCESSO PARA OBTENÇÃO DE FELDSPATO E QUARTZO A PARTIR DE GRANITOS E OUTRAS ROCHAS

Prazo de SigiloInvention Patent

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Application data

Number

PI8805310

Type

Invention Patent

Filing

10/11/1988

Publication

05/29/1990

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Progress at the INPI

Filing10/11/88
Publication05/29/90
Examination10/16/90
Allowance08/16/94
Grant05/30/95
Expired09/02/08

The letters patent expired on 09/02/2008: 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: 02/14/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Tavares Pinheiro Industrial Ltda

SP, BR

Tavares Pinheiro Industrial S/A

SP, BR

Inventors

T. P. (pessoa física)

Technical data

IPC Classification

B07B 1/00 C01B 33/12 C01B 33/26

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

02/14/1989

RPI 956

Carta-patente expirada

#21.1

Patente extinta em 11/10/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

05/30/1995

RPI 1278

Notificação para pagamento de retribuição

#13.1

12/13/1994

RPI 1254

14.4

10/04/1994

RPI 1244

Deferimento

#9.1

08/16/1994

RPI 1237

Solicitação de exame técnico

#4.1

10/16/1990

RPI 1037

Publicação do pedido de patente

#3.1

05/29/1990

RPI 1020

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