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Official data from INPI

PROCESSO DE RECUPERAÇÃO DE REGUGOS DE POLIÉSTERES.

ConcedidaInvention Patent
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Application data

Number

PI7907452

Type

Invention Patent

Filing

11/13/1979

Publication

-
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Progress at the INPI

  1. Filing11/13/79
  2. Publication
  3. Examination10/13/81
  4. Allowance09/10/85
  5. Grant06/24/86
  6. Expired05/02/95

The letters patent expired on 05/02/1995: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 06/24/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Rhodia S/A

SP, BR

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Inventors

C. L. (pessoa física)

W. M. (pessoa física)

Technical data

IPC Classification

C08J 11/04

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/24/1986

RPI 818

Notificação para pagamento de retribuição

#13.1

01/14/1986

RPI 795

Deferimento

#9.1

09/10/1985

RPI 777

Exigência - art. 36 da LPI

#6.1

11/27/1984

RPI 736

Exigência - art. 36 da LPI

#6.1

02/28/1984

RPI 697

Solicitação de exame técnico

#4.1

10/13/1981

RPI 573

Carta-patente expirada

#21.1

05/02/1995

RPI 1274

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