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Official data from INPI

Método de preparação de um composto polimérico quaternário de amônio.

ConcedidaInvention Patent

Application data

Number

PI8304165

Type

Invention Patent

Filing

08/03/1983

Publication

04/24/1984

Progress at the INPI

  1. Filing08/03/83
  2. Publication04/24/84
  3. Examination06/17/86
  4. Allowance05/31/88
  5. Grant01/10/89
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 01/10/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Buckman Laboratories International, Inc

US

See this company's full portfolio

Inventors

E. B. (pessoa física)

Technical data

IPC Classification

No IPC classification.

Priority claims

US

414.108 · 09/02/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

01/10/1989

RPI 951

Notificação para pagamento de retribuição

#13.1

09/20/1988

RPI 935

Deferimento

#9.1

05/31/1988

RPI 919

Solicitação de exame técnico

#4.1

06/17/1986

RPI 817

Publicação do pedido de patente

#3.1

04/24/1984

RPI 705

Pedido de patente depositado

#2.1

10/11/1983

RPI 677

Carta-patente expirada

#21.1

Patente extinta em 03/08/98

07/01/2008

RPI 1956

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