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Official data from INPI

PROCESSO DE PREPARAÇÃO DE UM PRODUTO DE BOEMITA MICROCRISTALINA E PROCESSOS DE PREPARAÇÃO DE CORPOS DE ALFA E GAMA ALUMINA

PublicadaInvention Patent

Application data

Number

PI8804056

Type

Invention Patent

Filing

08/11/1988

Publication

05/02/1989

Progress at the INPI

  1. Filing08/11/88
  2. Publication05/02/89
  3. Examination04/24/90
  4. Allowance03/28/95
  5. Grant10/31/95
  6. 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.

Talk to a specialist

Latest action published by the INPI: 05/02/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Norton Company

US

See this company's full portfolio

Inventors

R. B. (pessoa física)

CA

Technical data

IPC Classification

Priority claims

US

084549 · 08/11/1987

US

133584 · 12/16/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

05/02/1989

RPI 967

Pedido de patente depositado

#2.1

01/10/1989

RPI 951

Carta-patente expirada

#21.1

Patente extinta em 11/08/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

10/31/1995

RPI 1300

Republicação - classificação IPC

#15.11

10/24/1995

RPI 1299

Notificação para pagamento de retribuição

#13.1

09/05/1995

RPI 1292

Deferimento

#9.1

03/28/1995

RPI 1269

Exigência - art. 36 da LPI

#6.1

10/11/1994

RPI 1245

Solicitação de exame técnico

#4.1

04/24/1990

RPI 1015

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