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Official data from INPI

PRODUCAO DE ESPUMAS

ConcedidaInvention Patent

Application data

Number

PI8206162

Type

Invention Patent

Filing

02/18/1981

Publication

01/11/1983

Progress at the INPI

  1. Filing02/18/81
  2. Publication01/11/83
  3. Examination10/23/84
  4. Allowance07/09/85
  5. Grant12/31/85
  6. Expired08/19/08

The letters patent expired on 08/19/2008: 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: 12/31/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

HYMAN INT LTD [GB]

Inventors

G. [. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/31/1985

RPI 793

Notificação para pagamento de retribuição

#13.1

11/12/1985

RPI 786

Deferimento

#9.1

07/09/1985

RPI 768

Solicitação de exame técnico

#4.1

10/23/1984

RPI 731

Notificação de entrada na fase nacional - PCT

#1.3

01/11/1983

RPI 638

Carta-patente expirada

#21.1

Patente extinta em 15/02/97

08/19/2008

RPI 1963

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