Patent intelligence · US
US 6891989
Optical switch systems using waveguide grating-based wavelength selective switch modules
Optical switch systems using waveguide grating-based wavelength selective switch modules
Patent details — US 6891989
- Jurisdiction
- US
- Status
- expired
- Grant date
- May 10, 2005
- Expiration
- May 5, 2025
- Applicant
- Integrated Optics Communications Corp.
- Claims
- 5
- CPC classes
- A61K, A61K31/40, A61K31/44, A61K31/63
Quick answer
US 6891989 (Optical switch systems using waveguide grating-based wavelength selective switch modules) is held by Integrated Optics Communications Corp.. Status: expired. Granted May 10, 2005. Expires May 5, 2025 (0 years remaining) — relevant for patent-cliff and LOE planning.
Key facts
- Applicant
- Integrated Optics Communications Corp.
- Grant date
- Expiration
- Claims
- 5
- CPC classes
- A61K, A61K31/40, A61K31/44, A61K31/63
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Frequently asked questions
What is US patent 6891989?
US 6891989 (Optical switch systems using waveguide grating-based wavelength selective switch modules) is held by Integrated Optics Communications Corp.. Status: expired. Granted May 10, 2005. Expires May 5, 2025 (0 years remaining) — relevant for patent-cliff and LOE planning.
Who owns US 6891989?
Integrated Optics Communications Corp. is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 42 pharmaceutical patents for this assignee.
When does US 6891989 expire?
Our index shows an expiration date of May 5, 2025 (0 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.