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Official data from INPI

PROCESSO PARA REMOÇÃO DE PRATA DE SOLUÇÃO FIXADORA FOTOGRÁFICA USADA

Arquivada/ExtintaInvention PatentPCT · CA1990000347

Application data

Number

PI9007704

Type

Invention Patent

Filing

10/10/1990

Publication

07/21/1992

PCT

CA1990000347

Progress at the INPI

  1. Filing10/10/90
  2. Publication07/21/92
  3. Examination06/15/93
  4. Allowance10/05/99
  5. Grant02/22/00
  6. Expired05/28/13

The letters patent expired on 05/28/2013: 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: 03/27/2018. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

The Governors of the University of Alberta

CA

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Inventors

T. E. (pessoa física)

CA

W. K. (pessoa física)

CA

Technical data

IPC Classification

Priority claims

CA

2,000,527 · 10/12/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: C22B 11/04; G03C 5/395.

03/27/2018

RPI 2464

Carta-patente expirada

#21.1

Patente extinta em 10/10/2010

05/28/2013

RPI 2212

Concessão da patente

#16.1

02/22/2000

RPI 1520

Deferimento

#9.1

10/05/1999

RPI 1500

8.7

08/24/1999

RPI 1494

Retificação

#15.3

09/23/1997

RPI 1399

Solicitação de exame técnico

#4.1

06/15/1993

RPI 1176

Notificação de entrada na fase nacional - PCT

#1.3

07/21/1992

RPI 1129

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