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Official data from INPI

PROCESSO E COMPOSIÇÃO PARA O TRATAMENTO DE PLÁSTICOS COM SOLUÇÕES DE PERMANGANATO ALCALINO.

Em AnáliseInvention PatentPCT · US1985000854

Application data

Number

PI8506750

Type

Invention Patent

Filing

05/08/1985

Publication

09/23/1986

PCT

US1985000854

Progress at the INPI

  1. Filing05/08/85
  2. Publication09/23/86
  3. Examination05/05/87
  4. Allowance09/21/93
  5. Grant04/26/94
  6. Expired07/15/08

The letters patent expired on 07/15/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 05/05/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Enthone, Incorporated

US

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Inventors

A. G. (pessoa física)

US

C. C. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

618.281 · 06/07/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

05/05/1987

RPI 863

Notificação de entrada na fase nacional - PCT

#1.3

09/23/1986

RPI 831

Carta-patente expirada

#21.1

Patente extinta em 08/05/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

04/26/1994

RPI 1221

Notificação para pagamento de retribuição

#13.1

03/08/1994

RPI 1214

Deferimento

#9.1

09/21/1993

RPI 1190

Exigência - art. 36 da LPI

#6.1

06/01/1993

RPI 1174

Exigência - art. 36 da LPI

#6.1

11/17/1992

RPI 1146

Exigência - art. 36 da LPI

#6.1

10/30/1990

RPI 1039

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