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Official data from INPI

PROCESSO PARA O TINGIMENTO CONTINUO DE MATERIAL TEXTIL EM FORMA DE FAIXA DE FIBRAS DE CELULOSE E SUAS MISTURAS COM MATERIAIS DE FIBRAS SINTETICAS,COM CORANTES REATIVOS

ConcedidaInvention Patent

Application data

Number

PI7901871

Type

Invention Patent

Filing

03/29/1978

Publication

-

Progress at the INPI

  1. Filing03/29/78
  2. Publication
  3. Examination02/09/82
  4. Allowance08/02/83
  5. Grant01/31/84
  6. Expired06/21/94

The letters patent expired on 06/21/1994: 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: 01/31/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

HOECHST AG

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Inventors

E. D. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

01/31/1984

RPI 693

Notificação para pagamento de retribuição

#13.1

11/22/1983

RPI 683

Deferimento

#9.1

08/02/1983

RPI 667

Solicitação de exame técnico

#4.1

02/09/1982

RPI 590

Carta-patente expirada

#21.1

06/21/1994

RPI 1229

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